Develop Reference

Set wallpaper fit to screen error for bitmap drawable

I am trying to make wallpaper fit to screen in above API 23, but somehow I am getting an error for bitmap drawable. Error is "android.graphics.drawable.TransitionDrawable cannot be cast to android.graphics.drawable.BitmapDrawable".
Same code I have for API 22 and it is working perfect. Help me out.
Here is my code.
case R.id.action_wallpaper:
progressBar.setVisibility(View.VISIBLE);
BitmapDrawable drawable1 = (BitmapDrawable) image.getDrawable();
temp = drawable1.getBitmap();
// Drawable d = image.getDrawable();
String s = "image";
// temp = ((BitmapDrawable)d).getBitmap();
FileOutputStream out =
null;
try {
out = openFileOutput(s, Context.MODE_PRIVATE);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
temp.compress(Bitmap.CompressFormat.PNG, 90, out);
setWallpaper();
progressBar.setVisibility(View.GONE);
break;
void setWallpaper() {
BitmapDrawable drawable = (BitmapDrawable) image.getDrawable();
// Bitmap bitmap = drawable.getBitmap();
Bitmap icon = drawable.getBitmap();
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
icon.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
File f = new File(Environment.getExternalStorageDirectory()
+ File.separator + "wallpaper.jpg");
try {
f.createNewFile();
FileOutputStream fo = new FileOutputStream(f);
fo.write(bytes.toByteArray());
} catch (IOException e) {
e.printStackTrace();
}
Toast.makeText(getApplicationContext(), "Wallpaper Set",
Toast.LENGTH_SHORT).show();
Thread th = new Thread() {
public void run() {
// temp = image.getDrawingCache();
DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);
int height = metrics.heightPixels;
int width = metrics.widthPixels;
// Bitmap tempbitMap =
// BitmapFactory.decodeResource(getResources(), R.drawable.img);
Bitmap bitmap = Bitmap.createScaledBitmap(temp, width, height,
true);
WallpaperManager wallpaperManager = WallpaperManager
.getInstance(WallpaperActivity.this);
wallpaperManager.setWallpaperOffsetSteps(1, 1);
wallpaperManager.suggestDesiredDimensions(width, height);
try {
wallpaperManager.setBitmap(bitmap);
} catch (IOException e) {
e.printStackTrace();
}
handler.post(new Runnable() {
#Override
public void run() {
}
});

How to save the image?

I am using Picasso to fetch image and I just want to save the image.Below code is not working for me to save the image.
public class DownloadImage extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.mindmaps);
final ImageView imageView = (ImageView) findViewById(R.id.imageView);
Picasso.with(this)
.load("http://i.imgur.com/DvpvklR.png")
.into(imageView);
final Button btntakephoto = (Button) findViewById(R.id.save);
btntakephoto.setOnClickListener((View.OnClickListener) this);
}
public void onClick(View v){
ImageView imageView = (ImageView) findViewById(R.id.imageView);
Drawable image = imageView.getDrawable();
if (image != null && image instanceof BitmapDrawable) {
BitmapDrawable drawable = (BitmapDrawable) image;
Bitmap bitmap = drawable.getBitmap();
try {
File file = new File("path where you want to save");
FileOutputStream stream = new FileOutputStream(file);
bitmap.compress(CompressFormat.PNG, 100, stream);
stream.flush();
stream.close();
} catch (Exception e) {
// TODO: handle exception
}
}
}
On pressing the save button image should be saved in the gallery.

MediaStore.Images.Media.insertImage(getContentResolver(), yourBitmap, yourTitle , yourDescription);

try this,
call this method from button click:
private void saveImage() {
ImageView imageView = (ImageView) findViewById(R.id.imageView);
Drawable image = imageView.getDrawable();
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), image);
OutputStream out = null;
String fileName = "MyImage.jpg";
String mPath = "";
try {
out = mActivity.openFileOutput(fileName, Context.MODE_PRIVATE);
bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);
out.flush();
out.close();
File f = mActivity.getFileStreamPath(fileName);
mPath = f.getAbsolutePath();
} catch (Exception e) {
e.printStackTrace();
}
Logger.logger("URI :" + mPath);
}

Make your DownloadImage class implement View.OnClickListener interface.

I saved multiple image views as a single Image inside a layout.But using the same logic I am not able to do it for sharing button

btnsave.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
mainLayout.setDrawingCacheEnabled(true);
// mainLayout.setDrawingCacheEnabled(true);
Bitmap bitmap =mainLayout.getDrawingCache();
String root = Environment.getExternalStorageDirectory().toString();
File newDir = new File(root + "/saved_images");
newDir.mkdirs();
Random gen = new Random();
int n = 10000;
n = gen.nextInt(n);
String fotoname = "photo-" + n + ".jpg";
File file = new File(newDir, fotoname);
if (file.exists()) file.delete();
try {
FileOutputStream out = new FileOutputStream(file);
bitmap.compress(Bitmap.CompressFormat.JPEG, 90, out);
out.flush();
out.close();
Toast.makeText(getApplicationContext(), "saved to your folder", Toast.LENGTH_SHORT).show();
} catch (Exception e) {
} }
});
btnshare.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View view) {
mainLayout.setDrawingCacheEnabled(true);
Bitmap bitmap =mainLayout.getDrawingCache();//Getting Complication error here.
// BitmapDrawable bitmapDrawable = (BitmapDrawable)ivdisplayphoto.getDrawable();
// Bitmap bitmap = bitmapDrawable.getBitmap();
//Using above code I am able to share one imageview.
// Save this bitmap to a file.
File cache = getApplicationContext().getExternalCacheDir();
File sharefile = new File(cache, "toshare.png");
try {
FileOutputStream out = new FileOutputStream(sharefile);
bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);
out.flush();
out.close();
} catch (IOException e) {
}
// Now send it out to share
Intent share = new Intent(Intent.ACTION_SEND);
share.setType("image/*");
share.putExtra(Intent.EXTRA_STREAM, Uri.parse("file://" + sharefile));
try {
startActivity(Intent.createChooser(share, "Share photo"));
} catch (Exception e) {
}
}
});
}
I have 3 ImageViews As imageView1,imageView2,imageView3 and for layout
private RelativeLayout mainLayout;
mainLayout= (RelativeLayout) findViewById(R.id.childLayout);

Bitmap bitmap =mainLayout.getDrawingCache();
Only this was missing.
Now my code is working fine.

Android : taking Screenshot of the selected area programmatically

My code is as follow :
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button upload = (Button) findViewById(R.id.screeshotdButton);
upload.setOnClickListener(new Button.OnClickListener() {
#Override
public void onClick(View v) {
folderCheck();
}
});
}
private void folderCheck(){
File folder = new File(Environment.getExternalStorageDirectory() + "/cloze_screenshots");
boolean success = true;
// If the folder cloze not exist, create one
if (!folder.exists()) {
success = folder.mkdir();
}else{
ScreenShot();
}
// If mkdir successful
if (success) {
ScreenShot();
} else {
Log.e("mkdir_fail","QQ");
}
}
private void ScreenShot(){
String filePath = Environment.getExternalStorageDirectory()+ "/cloze_screenshots/temp.png";
// create bitmap screen capture
Bitmap bitmap;
View v1 = getWindow().getDecorView().getRootView();
v1.setDrawingCacheEnabled(true);
bitmap = Bitmap.createBitmap(v1.getDrawingCache());
v1.setDrawingCacheEnabled(false);
OutputStream fout = null;
File imageFile = new File(filePath);
try {
fout = new FileOutputStream(imageFile);
bitmap.compress(Bitmap.CompressFormat.JPEG, 90, fout);
fout.flush();
fout.close();
Toast.makeText(this, "Success", Toast.LENGTH_LONG).show();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
This code can take a fullscreen screenshot , but I want to take a screenshot on specific area (For example, the left block on the screen ) programmatically after I press the button.
Any code or suggestion will be appreciate.

You can wrap the contents in a layout for example LinearLayout and follow the above code for taking screenshot by using the methods on the wrapped layout.
Bitmap bitmap;
ViewGroup v1 = findViewById(R.id.layout_id);
v1.setDrawingCacheEnabled(true);
bitmap = Bitmap.createBitmap(v1.getDrawingCache());
v1.setDrawingCacheEnabled(false);

Below method takes snapshot of given view which is adjustable by means of height and width then returns bitmap of it
public static Bitmap takeSnapshot(View givenView, int width, int height) {
Bitmap bm = Bitmap.createBitmap(width , height, Bitmap.Config.ARGB_8888);
Canvas snap = new Canvas(bm);
givenView.layout(0, 0, givenView.getLayoutParams().width, givenView.getLayoutParams().height);
givenView.draw(snap);
return bm; }

How to take screen-shot of app screen in android?

I am developing an application in which I have to take screen-shot of app screen
right now I used below code it is not working. I am null bitmap image
Process sh = Runtime.getRuntime().exec("su", null,null);
OutputStream os = sh.getOutputStream();
os.write(("/system/bin/screencap -p " + "/sdcard/"+ "bs_score_img" +".png").getBytes("ASCII"));
os.flush();
os.close();
sh.waitFor();
String screenShot = Environment.getExternalStorageDirectory().toString()+"/bs_score_img.png";
Log.i("TAG:Score: screenShot path=", screenShot);
Bitmap bmp = BitmapFactory.decodeFile(new File(screenShot).getAbsolutePath());

try this :
Process sh = Runtime.getRuntime().exec("su", null,null);
OutputStream os = sh.getOutputStream();
os.write(("/system/bin/screencap -p " + "/sdcard/img.png").getBytes("ASCII"));
os.flush();
os.close();
sh.waitFor();
then read img.png as bitmap and convert it jpg as follows
Bitmap screen = BitmapFactory.decodeFile(Environment.getExternalStorageDirectory()+
File.separator +"img.png");
//my code for saving
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
screen.compress(Bitmap.CompressFormat.JPEG, 15, bytes);
//you can create a new file name "test.jpg" in sdcard folder.
File f = new File(Environment.getExternalStorageDirectory()+ File.separator + "test.jpg");
f.createNewFile();
//write the bytes in file
FileOutputStream fo = new FileOutputStream(f);
fo.write(bytes.toByteArray());
// remember close de FileOutput
fo.close();
Google has a library with which you can take screenshot without rooting, I tried that, But i am sure that it will eat out the memory as soon as possible.
Try http://code.google.com/p/android-screenshot-library/
or try this :
View v1 = L1.getRootView();
v1.setDrawingCacheEnabled(true);
Bitmap bm = v1.getDrawingCache();
BitmapDrawable bitmapDrawable = new BitmapDrawable(bm);
image = (ImageView) findViewById(R.id.screenshots);
image.setBackgroundDrawable(bitmapDrawable);

I found this code from another post:
// image naming and path to include sd card appending name you choose for file
String mPath = Environment.getExternalStorageDirectory().toString() + "/" + ACCUWX.IMAGE_APPEND;
// create bitmap screen capture
Bitmap bitmap;
View v1 = mCurrentUrlMask.getRootView();
v1.setDrawingCacheEnabled(true);
bitmap = Bitmap.createBitmap(v1.getDrawingCache());
v1.setDrawingCacheEnabled(false);
OutputStream fout = null;
imageFile = new File(mPath);
try {
fout = new FileOutputStream(imageFile);
bitmap.compress(Bitmap.CompressFormat.JPEG, 90, fout);
fout.flush();
fout.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

Let's say that you clicked on button
findViewById(R.id.button1).setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Bitmap bitmap = takeScreenshot();
saveBitmap(bitmap);
}
});
After that you need this two methods
public Bitmap takeScreenshot() {
View rootView = findViewById(android.R.id.content).getRootView();
rootView.setDrawingCacheEnabled(true);
return rootView.getDrawingCache();
}
public void saveBitmap(Bitmap bitmap) {
File imagePath = new File(Environment.getExternalStorageDirectory() + "/screenshot.png");
FileOutputStream fos;
try {
fos = new FileOutputStream(imagePath);
bitmap.compress(CompressFormat.JPEG, 100, fos);
fos.flush();
fos.close();
} catch (FileNotFoundException e) {
Log.e("GREC", e.getMessage(), e);
} catch (IOException e) {
Log.e("GREC", e.getMessage(), e);
}
}

public Bitmap screenShot(View view) {
Bitmap bitmap = Bitmap.createBitmap(view.getWidth(),
view.getHeight(), Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
view.draw(canvas);
return bitmap;
}
just call this method with the view you want a snapshot of.. so if you want the whole screen just pass in you top most ViewGroup. if you want the System controls also just call:

you can try this
private Bitmap getScreen(){
mDecorView = getWindow().getDecorView();
runOnUiThread(new Runnable() {
public void run() {
mDecorView.invalidate();
mDecorView.post(this);
}
});
View v1 = mDecorView.getRootView();
System.out.println("Root View : "+v1);
v1.setDrawingCacheEnabled(true);
return v1.getDrawingCache();
}
here mDecorView is View .

Here how you can capture screen and save it in your storage
give permissions for creating file in external storage
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
And this is code for activity.
private void takeScreenshot() {
Date now = new Date();
android.text.format.DateFormat.format("yyyy-MM-dd_hh:mm:ss", now);
try {
// image naming and path to include sd card appending name you choose for file
String mPath = Environment.getExternalStorageDirectory().toString() + "/" + now + ".jpg";
// create bitmap screen capture
View v1 = getWindow().getDecorView().getRootView();
v1.setDrawingCacheEnabled(true);
Bitmap bitmap = Bitmap.createBitmap(v1.getDrawingCache());
v1.setDrawingCacheEnabled(false);
File imageFile = new File(mPath);
FileOutputStream outputStream = new FileOutputStream(imageFile);
int quality = 100;
bitmap.compress(Bitmap.CompressFormat.JPEG, quality, outputStream);
outputStream.flush();
outputStream.close();
openScreenshot(imageFile);
} catch (Throwable e) {
// Several error may come out with file handling or OOM
e.printStackTrace();
}
}
This is how you can capture the screen.