Tusky-App-Android/app/src/main/java/com/keylesspalace/tusky/ViewMediaActivity.java

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/* Copyright 2017 Andrew Dawson
*
* This file is a part of Tusky.
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software Foundation; either version 3 of the
* License, or (at your option) any later version.
*
* Tusky is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details.
*
* You should have received a copy of the GNU General Public License along with Tusky; if not,
* see <http://www.gnu.org/licenses>. */
package com.keylesspalace.tusky;
import android.Manifest;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.app.DownloadManager;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Color;
import android.graphics.PorterDuff;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.annotation.StringRes;
import android.support.design.widget.Snackbar;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v4.view.ViewPager;
import android.support.v7.app.ActionBar;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import com.keylesspalace.tusky.fragment.ViewMediaFragment;
import com.keylesspalace.tusky.pager.ImagePagerAdapter;
import com.keylesspalace.tusky.view.ImageViewPager;
import java.io.File;
public class ViewMediaActivity extends BaseActivity implements ViewMediaFragment.PhotoActionsListener {
private static final int PERMISSIONS_REQUEST_WRITE_EXTERNAL_STORAGE = 1;
private ImageViewPager viewPager;
private View anyView;
private String[] imageUrls;
private Toolbar toolbar;
private boolean isToolbarVisible = true;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_view_media);
supportPostponeEnterTransition();
// Obtain the views.
toolbar = (Toolbar) findViewById(R.id.toolbar);
viewPager = (ImageViewPager) findViewById(R.id.view_pager);
anyView = toolbar;
// Gather the parameters.
Intent intent = getIntent();
imageUrls = intent.getStringArrayExtra("urls");
int initialPosition = intent.getIntExtra("urlIndex", 0);
// Setup the view pager.
final ImagePagerAdapter adapter = new ImagePagerAdapter(getSupportFragmentManager(),
imageUrls, initialPosition);
viewPager.setAdapter(adapter);
viewPager.setCurrentItem(initialPosition);
viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageScrolled(int position, float positionOffset,
int positionOffsetPixels) {
}
@Override
public void onPageSelected(int position) {
CharSequence title = adapter.getPageTitle(position);
toolbar.setTitle(title);
}
@Override
public void onPageScrollStateChanged(int state) {
}
});
// Setup the toolbar.
setSupportActionBar(toolbar);
ActionBar actionBar = getSupportActionBar();
if (actionBar != null) {
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setDisplayShowHomeEnabled(true);
actionBar.setTitle(adapter.getPageTitle(initialPosition));
}
toolbar.setNavigationOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
supportFinishAfterTransition();
}
});
toolbar.setOnMenuItemClickListener(new Toolbar.OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem item) {
int id = item.getItemId();
switch (id) {
case R.id.action_download:
downloadImage();
break;
}
return true;
}
});
View decorView = getWindow().getDecorView();
int uiOptions = View.SYSTEM_UI_FLAG_LOW_PROFILE;
decorView.setSystemUiVisibility(uiOptions);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
getWindow().setStatusBarColor(Color.BLACK);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.view_media_toolbar, menu);
// Manually tint all action buttons, because the theme overlay doesn't handle them properly.
for (int i = 0; i < menu.size(); i++) {
Drawable drawable = menu.getItem(i).getIcon();
if (drawable != null) {
drawable.mutate();
int color = ContextCompat.getColor(this, R.color.text_color_primary_dark);
drawable.setColorFilter(color, PorterDuff.Mode.SRC_IN);
}
}
return true;
}
@Override
public void onBringUp() {
supportStartPostponedEnterTransition();
}
@Override
public void onDismiss() {
supportFinishAfterTransition();
}
@Override
public void onPhotoTap() {
isToolbarVisible = !isToolbarVisible;
final int visibility = isToolbarVisible ? View.VISIBLE : View.INVISIBLE;
int alpha = isToolbarVisible ? 1 : 0;
toolbar.animate().alpha(alpha)
.setListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
toolbar.setVisibility(visibility);
animation.removeListener(this);
}
})
.start();
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[],
@NonNull int[] grantResults) {
switch (requestCode) {
case PERMISSIONS_REQUEST_WRITE_EXTERNAL_STORAGE: {
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
downloadImage();
} else {
doErrorDialog(R.string.error_media_download_permission, R.string.action_retry,
new View.OnClickListener() {
@Override
public void onClick(View v) {
downloadImage();
}
});
}
break;
}
}
}
private void doErrorDialog(@StringRes int descriptionId, @StringRes int actionId,
View.OnClickListener listener) {
if (anyView != null) {
Snackbar bar = Snackbar.make(anyView, getString(descriptionId),
Snackbar.LENGTH_SHORT);
bar.setAction(actionId, listener);
bar.show();
}
}
private void downloadImage() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M &&
ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)
!= PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
PERMISSIONS_REQUEST_WRITE_EXTERNAL_STORAGE);
} else {
String url = imageUrls[viewPager.getCurrentItem()];
Uri uri = Uri.parse(url);
String filename = new File(url).getName();
DownloadManager downloadManager =
(DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);
DownloadManager.Request request = new DownloadManager.Request(uri);
request.allowScanningByMediaScanner();
request.setDestinationInExternalPublicDir(Environment.DIRECTORY_PICTURES,
getString(R.string.app_name) + "/" + filename);
downloadManager.enqueue(request);
}
}
}