crash fixes

twidere.component.common/src/main/java/org/mariotaku/microblog/library/MicroBlogException.java

@@ -258,7 +258,9 @@ public class MicroBlogException extends Exception implements TwitterResponse, Ht
 
     @Override
     public String toString() {
-        return getMessage();
+        final String message = getMessage();
+        if (message == null) return getClass().getSimpleName();
+        return message;
     }
 
     public String getErrorMessage() {

twidere/src/main/kotlin/org/mariotaku/twidere/activity/MediaViewerActivity.kt

@@ -350,8 +350,10 @@ class MediaViewerActivity : BaseActivity(), IMediaViewerActivity, MediaSwipeClos
             ParcelableMedia.Type.EXTERNAL_PLAYER -> {
                 return Fragment.instantiate(this, ExternalBrowserPageFragment::class.java.name, args) as MediaViewerFragment
             }
+            else -> {
+                return Fragment.instantiate(this, ExternalBrowserPageFragment::class.java.name, args) as MediaViewerFragment
+            }
         }
-        throw UnsupportedOperationException(media.toString())
     }
 
     override fun getMediaCount(): Int {

twidere/src/main/kotlin/org/mariotaku/twidere/extension/ThrowableExtension.kt

@@ -53,5 +53,5 @@ private fun MicroBlogException.getMicroBlogErrorMessage(context: Context): Strin
     } else {
         errorMessage
     }
-    return msg ?: message ?: toString()
+    return msg ?: message ?: javaClass.simpleName
 }

twidere/src/main/kotlin/org/mariotaku/twidere/util/HtmlSpanBuilder.kt

@@ -20,6 +20,7 @@
 package org.mariotaku.twidere.util
 
 import android.graphics.Typeface
+import android.net.Uri
 import android.text.Editable
 import android.text.Spannable
 import android.text.SpannableStringBuilder

twidere/src/main/kotlin/org/mariotaku/twidere/util/Utils.kt

@@ -271,10 +271,12 @@ object Utils {
         return File(context.cacheDir, cacheDirName)
     }
 
-    fun getExternalCacheDir(context: Context?, cacheDirName: String,
-            sizeInBytes: Long): File? {
-        if (context == null) throw NullPointerException()
-        val externalCacheDir = context.externalCacheDir ?: return null
+    fun getExternalCacheDir(context: Context, cacheDirName: String, sizeInBytes: Long): File? {
+        val externalCacheDir = try {
+            context.externalCacheDir
+        } catch (e: SecurityException) {
+            null
+        } ?: return null
         val cacheDir = File(externalCacheDir, cacheDirName)
         if (sizeInBytes > 0 && externalCacheDir.freeSpace < sizeInBytes / 10) {
             // Less then 10% space available