588 lines
19 KiB
Java
588 lines
19 KiB
Java
package org.mian.gitnex.helpers;
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import android.content.Context;
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import android.content.SharedPreferences;
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import android.graphics.Bitmap;
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import android.graphics.Bitmap.CompressFormat;
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import android.graphics.BitmapFactory;
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import android.os.Environment;
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import android.preference.PreferenceManager;
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import android.text.TextUtils;
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import android.util.Log;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Map;
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public class TinyDB {
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private SharedPreferences preferences;
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private String DEFAULT_APP_IMAGEDATA_DIRECTORY;
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private String lastImagePath = "";
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public TinyDB(Context appContext) {
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preferences = PreferenceManager.getDefaultSharedPreferences(appContext);
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}
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/**
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* Decodes the Bitmap from 'path' and returns it
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* @param path image path
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* @return the Bitmap from 'path'
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*/
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public Bitmap getImage(String path) {
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Bitmap bitmapFromPath = null;
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try {
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bitmapFromPath = BitmapFactory.decodeFile(path);
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} catch (Exception e) {
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// TODO: handle exception
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e.printStackTrace();
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}
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return bitmapFromPath;
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}
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/**
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* Returns the String path of the last saved image
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* @return string path of the last saved image
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*/
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public String getSavedImagePath() {
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return lastImagePath;
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}
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/**
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* Saves 'theBitmap' into folder 'theFolder' with the name 'theImageName'
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* @param theFolder the folder path dir you want to save it to e.g "DropBox/WorkImages"
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* @param theImageName the name you want to assign to the image file e.g "MeAtLunch.png"
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* @param theBitmap the image you want to save as a Bitmap
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* @return returns the full path(file system address) of the saved image
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*/
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public String putImage(String theFolder, String theImageName, Bitmap theBitmap) {
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if (theFolder == null || theImageName == null || theBitmap == null)
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return null;
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this.DEFAULT_APP_IMAGEDATA_DIRECTORY = theFolder;
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String mFullPath = setupFullPath(theImageName);
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if (!mFullPath.equals("")) {
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lastImagePath = mFullPath;
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saveBitmap(mFullPath, theBitmap);
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}
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return mFullPath;
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}
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/**
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* Saves 'theBitmap' into 'fullPath'
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* @param fullPath full path of the image file e.g. "Images/MeAtLunch.png"
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* @param theBitmap the image you want to save as a Bitmap
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* @return true if image was saved, false otherwise
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*/
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public boolean putImageWithFullPath(String fullPath, Bitmap theBitmap) {
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return !(fullPath == null || theBitmap == null) && saveBitmap(fullPath, theBitmap);
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}
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/**
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* Creates the path for the image with name 'imageName' in DEFAULT_APP.. directory
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* @param imageName name of the image
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* @return the full path of the image. If it failed to create directory, return empty string
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*/
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private String setupFullPath(String imageName) {
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File mFolder = new File(Environment.getExternalStorageDirectory(), DEFAULT_APP_IMAGEDATA_DIRECTORY);
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if (isExternalStorageReadable() && isExternalStorageWritable() && !mFolder.exists()) {
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if (!mFolder.mkdirs()) {
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Log.e("ERROR", "Failed to setup folder");
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return "";
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}
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}
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return mFolder.getPath() + '/' + imageName;
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}
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/**
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* Saves the Bitmap as a PNG file at path 'fullPath'
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* @param fullPath path of the image file
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* @param bitmap the image as a Bitmap
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* @return true if it successfully saved, false otherwise
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*/
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private boolean saveBitmap(String fullPath, Bitmap bitmap) {
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if (fullPath == null || bitmap == null)
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return false;
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boolean fileCreated = false;
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boolean bitmapCompressed = false;
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boolean streamClosed = false;
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File imageFile = new File(fullPath);
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if (imageFile.exists())
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if (!imageFile.delete())
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return false;
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try {
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fileCreated = imageFile.createNewFile();
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} catch (IOException e) {
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e.printStackTrace();
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}
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FileOutputStream out = null;
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try {
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out = new FileOutputStream(imageFile);
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bitmapCompressed = bitmap.compress(CompressFormat.PNG, 100, out);
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} catch (Exception e) {
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e.printStackTrace();
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bitmapCompressed = false;
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} finally {
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if (out != null) {
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try {
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out.flush();
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out.close();
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streamClosed = true;
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} catch (IOException e) {
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e.printStackTrace();
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streamClosed = false;
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}
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}
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}
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return (fileCreated && bitmapCompressed && streamClosed);
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}
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// Getters
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/**
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* Get int value from SharedPreferences at 'key'. If key not found, return 'defaultValue'
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* @param key SharedPreferences key
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* @param defaultValue int value returned if key was not found
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* @return int value at 'key' or 'defaultValue' if key not found
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*/
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public int getInt(String key) {
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return preferences.getInt(key, 0);
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}
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public int getInt(String key, int defaultValue) {
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return preferences.getInt(key, defaultValue);
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}
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/**
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* Get parsed ArrayList of Integers from SharedPreferences at 'key'
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* @param key SharedPreferences key
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* @return ArrayList of Integers
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*/
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public ArrayList<Integer> getListInt(String key) {
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String[] myList = TextUtils.split(preferences.getString(key, ""), "‚‗‚");
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ArrayList<String> arrayToList = new ArrayList<String>(Arrays.asList(myList));
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ArrayList<Integer> newList = new ArrayList<Integer>();
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for (String item : arrayToList)
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newList.add(Integer.parseInt(item));
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return newList;
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}
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/**
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* Get long value from SharedPreferences at 'key'. If key not found, return 'defaultValue'
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* @param key SharedPreferences key
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* @param defaultValue long value returned if key was not found
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* @return long value at 'key' or 'defaultValue' if key not found
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*/
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public long getLong(String key, long defaultValue) {
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return preferences.getLong(key, defaultValue);
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}
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/**
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* Get float value from SharedPreferences at 'key'. If key not found, return 'defaultValue'
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* @param key SharedPreferences key
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* @param defaultValue float value returned if key was not found
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* @return float value at 'key' or 'defaultValue' if key not found
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*/
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public float getFloat(String key) {
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return preferences.getFloat(key, 0);
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}
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public float getFloat(String key, float defaultValue) {
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return preferences.getFloat(key, defaultValue);
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}
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/**
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* Get double value from SharedPreferences at 'key'. If exception thrown, return 'defaultValue'
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* @param key SharedPreferences key
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* @param defaultValue double value returned if exception is thrown
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* @return double value at 'key' or 'defaultValue' if exception is thrown
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*/
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public double getDouble(String key, double defaultValue) {
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String number = getString(key);
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try {
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return Double.parseDouble(number);
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} catch (NumberFormatException e) {
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return defaultValue;
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}
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}
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/**
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* Get parsed ArrayList of Double from SharedPreferences at 'key'
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* @param key SharedPreferences key
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* @return ArrayList of Double
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*/
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public ArrayList<Double> getListDouble(String key) {
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String[] myList = TextUtils.split(preferences.getString(key, ""), "‚‗‚");
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ArrayList<String> arrayToList = new ArrayList<String>(Arrays.asList(myList));
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ArrayList<Double> newList = new ArrayList<Double>();
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for (String item : arrayToList)
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newList.add(Double.parseDouble(item));
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return newList;
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}
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/**
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* Get parsed ArrayList of Integers from SharedPreferences at 'key'
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* @param key SharedPreferences key
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* @return ArrayList of Longs
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*/
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public ArrayList<Long> getListLong(String key) {
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String[] myList = TextUtils.split(preferences.getString(key, ""), "‚‗‚");
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ArrayList<String> arrayToList = new ArrayList<String>(Arrays.asList(myList));
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ArrayList<Long> newList = new ArrayList<Long>();
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for (String item : arrayToList)
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newList.add(Long.parseLong(item));
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return newList;
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}
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/**
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* Get String value from SharedPreferences at 'key'. If key not found, return ""
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* @param key SharedPreferences key
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* @return String value at 'key' or "" (empty String) if key not found
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*/
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public String getString(String key) {
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return preferences.getString(key, "");
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}
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public String getString(String key, String defaultValue) {
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return preferences.getString(key, defaultValue);
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}
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/**
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* Get parsed ArrayList of String from SharedPreferences at 'key'
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* @param key SharedPreferences key
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* @return ArrayList of String
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*/
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public ArrayList<String> getListString(String key) {
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return new ArrayList<String>(Arrays.asList(TextUtils.split(preferences.getString(key, ""), "‚‗‚")));
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}
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/**
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* Get boolean value from SharedPreferences at 'key'. If key not found, return 'defaultValue'
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* @param key SharedPreferences key
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* @param defaultValue boolean value returned if key was not found
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* @return boolean value at 'key' or 'defaultValue' if key not found
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*/
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public boolean getBoolean(String key) {
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return preferences.getBoolean(key, false);
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}
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public boolean getBoolean(String key, boolean defaultValue) {
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return preferences.getBoolean(key, defaultValue);
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}
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/**
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* Get parsed ArrayList of Boolean from SharedPreferences at 'key'
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* @param key SharedPreferences key
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* @return ArrayList of Boolean
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*/
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public ArrayList<Boolean> getListBoolean(String key) {
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ArrayList<String> myList = getListString(key);
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ArrayList<Boolean> newList = new ArrayList<Boolean>();
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for (String item : myList) {
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if (item.equals("true")) {
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newList.add(true);
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} else {
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newList.add(false);
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}
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}
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return newList;
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}
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// public ArrayList<Object> getListObject(String key, Class<?> mClass){
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// Gson gson = new Gson();
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//
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// ArrayList<String> objStrings = getListString(key);
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// ArrayList<Object> objects = new ArrayList<Object>();
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//
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// for(String jObjString : objStrings){
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// Object value = gson.fromJson(jObjString, mClass);
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// objects.add(value);
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// }
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// return objects;
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// }
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// public <T> T getObject(String key, Class<T> classOfT){
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//
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// String json = getString(key);
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// Object value = new Gson().fromJson(json, classOfT);
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// if (value == null)
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// throw new NullPointerException();
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// return (T)value;
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// }
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// Put methods
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/**
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* Put int value into SharedPreferences with 'key' and save
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* @param key SharedPreferences key
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* @param value int value to be added
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*/
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public void putInt(String key, int value) {
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checkForNullKey(key);
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preferences.edit().putInt(key, value).apply();
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}
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/**
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* Put ArrayList of Integer into SharedPreferences with 'key' and save
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* @param key SharedPreferences key
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* @param intList ArrayList of Integer to be added
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*/
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public void putListInt(String key, ArrayList<Integer> intList) {
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checkForNullKey(key);
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Integer[] myIntList = intList.toArray(new Integer[0]);
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preferences.edit().putString(key, TextUtils.join("‚‗‚", myIntList)).apply();
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}
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/**
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* Put long value into SharedPreferences with 'key' and save
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* @param key SharedPreferences key
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* @param value long value to be added
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*/
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public void putLong(String key, long value) {
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checkForNullKey(key);
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preferences.edit().putLong(key, value).apply();
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}
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/**
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* Put ArrayList of Long into SharedPreferences with 'key' and save
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* @param key SharedPreferences key
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* @param longList ArrayList of Long to be added
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*/
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public void putListLong(String key, ArrayList<Long> longList) {
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checkForNullKey(key);
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Long[] myLongList = longList.toArray(new Long[0]);
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preferences.edit().putString(key, TextUtils.join("‚‗‚", myLongList)).apply();
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}
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/**
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* Put float value into SharedPreferences with 'key' and save
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* @param key SharedPreferences key
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* @param value float value to be added
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*/
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public void putFloat(String key, float value) {
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checkForNullKey(key);
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preferences.edit().putFloat(key, value).apply();
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}
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/**
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* Put double value into SharedPreferences with 'key' and save
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* @param key SharedPreferences key
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* @param value double value to be added
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*/
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public void putDouble(String key, double value) {
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checkForNullKey(key);
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putString(key, String.valueOf(value));
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}
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/**
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* Put ArrayList of Double into SharedPreferences with 'key' and save
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* @param key SharedPreferences key
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* @param doubleList ArrayList of Double to be added
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*/
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public void putListDouble(String key, ArrayList<Double> doubleList) {
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checkForNullKey(key);
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Double[] myDoubleList = doubleList.toArray(new Double[doubleList.size()]);
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preferences.edit().putString(key, TextUtils.join("‚‗‚", myDoubleList)).apply();
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}
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/**
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* Put String value into SharedPreferences with 'key' and save
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* @param key SharedPreferences key
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* @param value String value to be added
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*/
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public void putString(String key, String value) {
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checkForNullKey(key); checkForNullValue(value);
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preferences.edit().putString(key, value).apply();
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}
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/**
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* Put ArrayList of String into SharedPreferences with 'key' and save
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* @param key SharedPreferences key
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* @param stringList ArrayList of String to be added
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*/
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public void putListString(String key, ArrayList<String> stringList) {
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checkForNullKey(key);
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String[] myStringList = stringList.toArray(new String[stringList.size()]);
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preferences.edit().putString(key, TextUtils.join("‚‗‚", myStringList)).apply();
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}
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/**
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* Put boolean value into SharedPreferences with 'key' and save
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* @param key SharedPreferences key
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* @param value boolean value to be added
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*/
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public void putBoolean(String key, boolean value) {
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checkForNullKey(key);
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preferences.edit().putBoolean(key, value).apply();
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}
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/**
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* Put ArrayList of Boolean into SharedPreferences with 'key' and save
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* @param key SharedPreferences key
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* @param boolList ArrayList of Boolean to be added
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*/
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public void putListBoolean(String key, ArrayList<Boolean> boolList) {
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checkForNullKey(key);
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ArrayList<String> newList = new ArrayList<String>();
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for (Boolean item : boolList) {
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if (item) {
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newList.add("true");
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} else {
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newList.add("false");
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}
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}
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putListString(key, newList);
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}
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/**
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* Put ObJect any type into SharedPrefrences with 'key' and save
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* @param key SharedPreferences key
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* @param obj is the Object you want to put
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*/
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// public void putObject(String key, Object obj){
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// checkForNullKey(key);
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// Gson gson = new Gson();
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// putString(key, gson.toJson(obj));
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// }
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//
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// public void putListObject(String key, ArrayList<Object> objArray){
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// checkForNullKey(key);
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// Gson gson = new Gson();
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// ArrayList<String> objStrings = new ArrayList<String>();
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// for(Object obj : objArray){
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// objStrings.add(gson.toJson(obj));
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// }
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// putListString(key, objStrings);
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// }
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/**
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* Remove SharedPreferences item with 'key'
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* @param key SharedPreferences key
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*/
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public void remove(String key) {
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preferences.edit().remove(key).apply();
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}
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/**
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* Delete image file at 'path'
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* @param path path of image file
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* @return true if it successfully deleted, false otherwise
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*/
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public boolean deleteImage(String path) {
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return new File(path).delete();
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}
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/**
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* Clear SharedPreferences (remove everything)
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*/
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public void clear() {
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preferences.edit().clear().apply();
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}
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/**
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* Retrieve all values from SharedPreferences. Do not modify collection return by method
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* @return a Map representing a list of key/value pairs from SharedPreferences
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*/
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public Map<String, ?> getAll() {
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return preferences.getAll();
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}
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/**
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* Register SharedPreferences change listener
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* @param listener listener object of OnSharedPreferenceChangeListener
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*/
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public void registerOnSharedPreferenceChangeListener(
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SharedPreferences.OnSharedPreferenceChangeListener listener) {
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preferences.registerOnSharedPreferenceChangeListener(listener);
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}
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/**
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* Unregister SharedPreferences change listener
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* @param listener listener object of OnSharedPreferenceChangeListener to be unregistered
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*/
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public void unregisterOnSharedPreferenceChangeListener(
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SharedPreferences.OnSharedPreferenceChangeListener listener) {
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preferences.unregisterOnSharedPreferenceChangeListener(listener);
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}
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/**
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* Check if external storage is writable or not
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* @return true if writable, false otherwise
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*/
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public static boolean isExternalStorageWritable() {
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return Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState());
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}
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/**
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* Check if external storage is readable or not
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* @return true if readable, false otherwise
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*/
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public static boolean isExternalStorageReadable() {
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String state = Environment.getExternalStorageState();
|
|
|
|
return Environment.MEDIA_MOUNTED.equals(state) ||
|
|
Environment.MEDIA_MOUNTED_READ_ONLY.equals(state);
|
|
}
|
|
/**
|
|
* null keys would corrupt the shared pref file and make them unreadable this is a preventive measure
|
|
* @param the pref key
|
|
*/
|
|
public void checkForNullKey(String key){
|
|
if (key == null){
|
|
throw new NullPointerException();
|
|
}
|
|
}
|
|
/**
|
|
* null keys would corrupt the shared pref file and make them unreadable this is a preventive measure
|
|
* @param the pref key
|
|
*/
|
|
public void checkForNullValue(String value){
|
|
if (value == null){
|
|
throw new NullPointerException();
|
|
}
|
|
}
|
|
}
|