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.
Related
I want to take screenshot of a layout from another activity. When I take view into Bitmap it shows NullPointerExcenption. Here is my code
View v=LayoutInflater.from(this).inflate(R.layout.score_share, null);
layoutScore.setDrawingCacheEnabled(true);
Bitmap bm= Bitmap.createBitmap(v.getDrawingCache());
layoutScore.setDrawingCacheEnabled(false);
File file= new File(Environment.getExternalStorageDirectory()+"/scs.jpg");
try {
FileOutputStream outputStream= new FileOutputStream(file);
bm.compress(Bitmap.CompressFormat.JPEG,100, outputStream);
outputStream.flush();
outputStream.close();
openScreenshot(file);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
Below is the method to capture screenshot.
public Bitmap getScreenShot(View view) {
View screenView = view.getRootView();
screenView.setDrawingCacheEnabled(true);
Bitmap bitmap = Bitmap.createBitmap(screenView.getDrawingCache());
screenView.setDrawingCacheEnabled(false);
return bitmap;
}
Store the Bitmap into the SDCard:
public void store(Bitmap bm, String fileName){
final static String dirPath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/Screenshots";
File dir = new File(dirPath);
if(!dir.exists())
dir.mkdirs();
File file = new File(dirPath, fileName);
try {
FileOutputStream fOut = new FileOutputStream(file);
bm.compress(Bitmap.CompressFormat.PNG, 85, fOut);
fOut.flush();
fOut.close();
} catch (Exception e) {
e.printStackTrace();
}
}
Now Inflate your layout and capture screen shot
View view=LayoutInflater.from(this).inflate(R.layout.score_share, null);
Bitmap bmp = getScreenShot(view);
bmp is the required screenshot then save it to SDcard like
store(bmp, "Screenshot.jpg");
Don't forget to add Write External Storage permission in manifest
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
Thanks to this answer Capture Screenshot and store to sdcard
If the problem is getDrawingCache returning null, then just add this lines of code before v.buildDrawingCache(true);
v.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED),
MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
v.layout(0, 0, v.getMeasuredWidth(), v.getMeasuredHeight());
This will prevent that the view has a size of (0,0), and because of that it turns null safe.
I want to get a picture from a MapBox MapView, but only returns a transparent image with MapBox Logo.
Transparent snapshot
This is the code, thanks!:
public File getBitmapFromView(View view) {
Bitmap returnedBitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(),Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(returnedBitmap);
Drawable bgDrawable =view.getBackground();
if (bgDrawable!=null)
bgDrawable.draw(canvas);
else
canvas.drawColor(Color.WHITE);
view.draw(canvas);
File file = new File(Utils.getAppFolder() + currentTrack.getDate().toString().replace(" ", "_").replace(":","_") + ".png");
try{
file.createNewFile();
}catch(IOException e){
Utils.logError("IOException: Exception in create new File: " + e.toString() );
}
FileOutputStream fileos = null;
try{
fileos = new FileOutputStream(file);
}catch(FileNotFoundException e){
Log.e("FileNotFoundException",e.toString());
}
returnedBitmap.compress(Bitmap.CompressFormat.PNG, 80, fileos);
return file;
}
First add permission to save file:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
And this is the code:
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();
}
}
Solved!,
Here is the explanation and the code to fix this issue
https://github.com/mapbox/mapbox-gl-native/issues/3677
Perform snapshot of current MapView state with notifying listener about it. This method is asynchronous so it does not block calling thread. OnSnapshotReady.onSnapshotReady is called from non UI thread.
mapView.snapshot{bitmap->}
I had designed my android layout with some textviews and listview,after loading screen i just wanted to take screen shot of that layout and i have to save it on my device.Is it possible or not.
Bitmap bitmap;
View v1 = findViewById(R.id.rlid);// get ur root view id
v1.setDrawingCacheEnabled(true);
bitmap = Bitmap.createBitmap(v1.getDrawingCache());
v1.setDrawingCacheEnabled(false);
For saving
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 40, bytes);
File f = new File(Environment.getExternalStorageDirectory()
+ File.separator + "test.jpg")
f.createNewFile();
FileOutputStream fo = new FileOutputStream(f);
fo.write(bytes.toByteArray());
fo.close();
dont forget to give permission
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
From How to programatically take a screenshot on Android?
Here is the sample code:
// 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 = getWindow().getDecorView().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();
}
For this you need this permission in manifest
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
I have this code for take screenshot of current view, a fragment that lives into an activity, where the activity has only a background.
private File captureScreen() {
Bitmap screenshot = null;
try {
if (view != null) {
screenshot = Bitmap.createBitmap(view.getMeasuredWidth(),
view.getMeasuredHeight(), Config.ARGB_8888);
Canvas canvas = new Canvas(screenshot);
view.draw(canvas);
// save pics
File cache_dir = Environment.getExternalStorageDirectory();
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
screenshot.compress(Bitmap.CompressFormat.PNG, 90, bytes);
File f = new File(cache_dir + File.separator + "screen.png");
f.createNewFile();
FileOutputStream fo = new FileOutputStream(f);
fo.write(bytes.toByteArray());
fo.close();
return f;
}
} catch (Exception e) {
// TODO
}
return null;
}
but bitmap saved is not exactly what i'm expecting.
Screenshot take only fragment elements, but not activity background. How can i include it into screenshot?
From :How to programmatically take a screenshot in Android?
// 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();
}
try this. it work for me. and for you too
Call this method, passing in the outer most ViewGroup that you want a screen shot of:
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;
}
I've used it for a while in a few different apps and haven't had any issues. Hope it vll helps
In my application I have view with some buttons and SurfaceView. I must take screenshot of this view, but in place of SurfaceView is only black field. I try solutions which I found on stackoverflow, but they don't work for me.
This is my code which I usualy take screenshots:
File folder = new File(Environment.getExternalStorageDirectory().getPath() + "/folder");
if (!folder.exists()) {
folder.mkdir();
}
String path = folder.getAbsolutePath() + "snapshot.png";
File file = new File(path);
file.createNewFile();
View view = this.findViewById(android.R.id.content).getRootView();
view.setDrawingCacheEnabled(true);
Bitmap drawingCache = view.getDrawingCache();
Bitmap bitmap = Bitmap.createBitmap(drawingCache);
FileOutputStream fos = null;
try {
fos = new FileOutputStream(file);
bitmap.compress(CompressFormat.PNG, 100, fos);
} finally {
bitmap.recycle();
view.setDrawingCacheEnabled(false);
if (fos != null) {
try {
fos.close();
} catch (IOException e) {
Log.e(TAG, e.getMessage(), e);
}
}
}
Maybe someone can help.