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POWhere to Set Bitmap as Background in Java File
 

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  1. POWhere to Set Bitmap as Background in Java File
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    <p>In my app, I have a imageView that collects the a picture from the user, saves it, and then is supposed to set that image as the background in my other activity. I can't figure out where to set the image as the background in my activity using this code:</p> <pre><code>Drawable d = new BitmapDrawable(getResources(),bitmap); yourBackgroundView.setBackground(d); </code></pre> <p>Here is the coding: Drag_and_Drop_App.java:</p> <pre><code>package com.example.awesomefilebuilderwidget; IMPORTS public class Drag_and_Drop_App extends Activity { private ListView mListAppInfo; // Search EditText EditText inputSearch; public static AppInfoAdapter adapter; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // set layout for the main screen setContentView(R.layout.drag_and_drop_app); // import buttons Button btnLinkToFeedback = (Button) findViewById(R.id.btnLinkToFeedback); Button btnLinkToPersonalize = (Button) findViewById(R.id.btnLinkToPersonalize); // Link to Feedback Screen btnLinkToFeedback.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { Intent i = new Intent(getApplicationContext(), Feedback.class); startActivity(i); finish(); } }); // Link to Personalize Screen btnLinkToPersonalize.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { Intent i = new Intent(getApplicationContext(), Personalize.class); startActivity(i); finish(); } }); // create new adapter adapter = new AppInfoAdapter(this, (List&lt;ApplicationInfo&gt;) Utilities.getInstalledApplication(this), getPackageManager()); // load list application mListAppInfo = (ListView)findViewById(R.id.lvApps); // set adapter to list view mListAppInfo.setAdapter(adapter); // search bar inputSearch = (EditText) findViewById(R.id.inputSearch); inputSearch.addTextChangedListener(new TextWatcher() { @Override public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) { // When user changed the Text // Drag_and_Drop_App.this.adapter.getFilter().filter(cs); if (Drag_and_Drop_App.this.adapter == null){ // some print statement saying it is null Log.d ("msg_error", "adapter_is_null"); } Drag_and_Drop_App.this.adapter.getFilter().filter(cs); } @Override public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) { // TODO Auto-generated method stub } @Override public void afterTextChanged(Editable arg0) { // TODO Auto-generated method stub } }); // implement event when an item on list view is selected mListAppInfo.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView&lt;?&gt; parent, View view, int pos, long id) { // get the list adapter AppInfoAdapter appInfoAdapter = (AppInfoAdapter)parent.getAdapter(); // get selected item on the list ApplicationInfo appInfo = (ApplicationInfo)appInfoAdapter.getItem(pos); // launch the selected application Utilities.launchApp(parent.getContext(), getPackageManager(), appInfo.packageName); } }); // implement event when an item on list view is selected via long-click for drag and drop mListAppInfo.setOnItemLongClickListener(new OnItemLongClickListener(){ @Override public boolean onItemLongClick(AdapterView&lt;?&gt; parent, View view, int pos, long id) { // TODO Auto-generated method stub // get the list adapter AppInfoAdapter appInfoAdapter = (AppInfoAdapter)parent.getAdapter(); // get selected item on the list ApplicationInfo appInfo = (ApplicationInfo)appInfoAdapter.getItem(pos); // launch the selected application Utilities.launchApp(parent.getContext(), getPackageManager(), appInfo.packageName); return true; } }); } // load image from imageview public Bitmap getThumbnail(String filename) { Bitmap thumbnail = null; try { File filePath = this.getFileStreamPath(filename); FileInputStream fi = new FileInputStream(filePath); thumbnail = BitmapFactory.decodeStream(fi); } catch (Exception ex) { Log.e("getThumbnail() on internal storage", ex.getMessage()); } return thumbnail; } } </code></pre> <p>Added coding:</p> <pre><code> RelativeLayout yourBackgroundView = (RelativeLayout) findViewById(R.layout.drag_and_drop_app); yourBackgroundView = backgroundReference.get(); Drawable d = new BitmapDrawable(getResources(),bitmap); if (Build.VERSION.SDK_INT &lt; Build.VERSION_CODES.JELLY_BEAN){ yourBackgroundView.setBackgroundDrawable(d); } else { yourBackgroundView.setBackground(d); } </code></pre> <p>CURRENT CLASSES THAT ARE RELEVANT:</p> <p>Personalize.java:</p> <pre><code>package com.example.awesomefilebuilderwidget; IMPORTS public class Personalize extends Activity implements OnClickListener { Button button; ImageView image; ImageView image2; Button btnChangeImage; Button btnChangeImageForIcon; private static final int SELECT_PICTURE = 1; private static final int SELECT_PICTURE_2 = 2; private String selectedImagePath; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.personalize); image = (ImageView) findViewById(R.id.imageView1); image2 = (ImageView) findViewById(R.id.imageView2Icon); Button btnChangeImage = (Button) findViewById(R.id.btnChangeImage); btnChangeImage.setOnClickListener(this); Button btnChangeImageForIcon = (Button) findViewById(R.id.btnChangeImageForIcon); btnChangeImageForIcon.setOnClickListener(this); } @Override public void onClick(View v) { // TODO Auto-generated method stub Intent intent = new Intent(); intent.setType("image/*"); intent.setAction(Intent.ACTION_GET_CONTENT); intent.addCategory(Intent.CATEGORY_OPENABLE); startActivityForResult(intent, SELECT_PICTURE); }; public String getPath(Uri uri) { String[] projection = { MediaStore.Images.Media.DATA }; Cursor cursor = getContentResolver().query(uri, projection, null, null, null); int column_index = cursor .getColumnIndexOrThrow(MediaStore.Images.Media.DATA); cursor.moveToFirst(); return cursor.getString(column_index); } @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { if (resultCode == RESULT_OK) { if (requestCode == SELECT_PICTURE) { Uri selectedImageUri = data.getData(); selectedImagePath = getPath(selectedImageUri); Bitmap b1 = getAndDecodeImage(selectedImagePath); if(b1 != null){ image.setImageBitmap(b1); } } else if (requestCode == SELECT_PICTURE_2) { Uri selectedImageUri = data.getData(); selectedImagePath = getPath(selectedImageUri); Bitmap b2 = getAndDecodeImage(selectedImagePath); if(b2 != null){ image2.setImageBitmap(b2); } } } } private Bitmap getAndDecodeImage(String selectedImagePath){ try { FileInputStream fileis=new FileInputStream(selectedImagePath); BufferedInputStream bufferedstream=new BufferedInputStream(fileis); byte[] bMapArray= new byte[bufferedstream.available()]; bufferedstream.read(bMapArray); Bitmap bMap = BitmapFactory.decodeByteArray(bMapArray, 0, bMapArray.length); if (fileis != null) { fileis.close(); } if (bufferedstream != null) { bufferedstream.close(); } return bMap; } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return null; } </code></pre> <p>public boolean saveImageToInternalStorage(Bitmap image) { try { FileOutputStream fos = this.openFileOutput("desiredFilename.png", Context.MODE_PRIVATE); image.compress(Bitmap.CompressFormat.PNG, 100, fos); fos.close();<br> return true; } catch (Exception e) { return false; } } }</p>
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