Develop Reference

How to programmatically take screenshot of an android application without notification and navigation bars

I am using the below code for taking screenshot in my application.
View rootView = findViewById(android.R.id.content).getRootView();
rootView.setDrawingCacheEnabled(true);
rootView.buildDrawingCache(true);
Bitmap bitmap = rootView.getDrawingCache();
But I am getting an image with two black portion in the top and bottom by the notification and navigation bars. I need to remove those black areas. I need not to replace those area with the notification and navigation bars. But i need the toolbar.

take the drawing cache of the root Layout as below:
//onCreate
setContentView(R.layout.activity_main);
layout = (RelativeLayout) findViewById(R.id.activity_main);
layout.setDrawingCacheEnabled(true);
And to get bitmap, the usual way,
Bitmap bitmap = layout.getDrawingCache();
activity_main:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<android.support.v7.widget.Toolbar
android:id="#+id/toolBar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:background="#color/colorPrimary" />
<!--other content-->
</RelativeLayout>

Use Below Method:
public static Bitmap loadBitmapFromView(Context context, View v) {
DisplayMetrics dm = context.getResources().getDisplayMetrics();
v.measure(View.MeasureSpec.makeMeasureSpec(dm.widthPixels, View.MeasureSpec.EXACTLY),
View.MeasureSpec.makeMeasureSpec(dm.heightPixels, View.MeasureSpec.EXACTLY));
v.layout(0, 0, v.getMeasuredWidth(), v.getMeasuredHeight());
Bitmap returnedBitmap = Bitmap.createBitmap(v.getMeasuredWidth(),
v.getMeasuredHeight(), Bitmap.Config.ARGB_8888);
Canvas c = new Canvas(returnedBitmap);
v.draw(c);
return returnedBitmap;
}
Pass your parent view inside the argument.

Take this to another Linear Layout
<LinearLayout
android:id="#+id/linear"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/munch"
android:id="#+id/munchscreen"/>
<ImageView
android:layout_width="200dp"
android:layout_height="200dp"
android:id="#+id/screenshots"
android:contentDescription="#string/app_name"
/>
</LinearLayout>
Now find Id for this Linear Layout on oncreate() method making it global variable
LinearLayout ll;
ll = (LinearLayout)findViewById(R.id.linear);
now capture this screen:
ll.setDrawingCacheEnabled(true);
ll.buildDrawingCache(true);
Bitmap cs = Bitmap.createBitmap(ll.getDrawingCache());
ll.setDrawingCacheEnabled(false);
Now set this bitmap to your ImageView.

Following is the XML layout file where I have added a button, textview and an imageview in a linear layout. And I have also added onClick attribute in the button.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_screenshoat"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.ncrypted.myapplication.Screenshoat">
<Button
android:id="#+id/btnScreenshot"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Taake screen shot"/>
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/imageView"/>
</LinearLayout>
This is android activity file where I have added some java code to take screenshot and import android.graphics.Bitmap;, java.io.ByteArrayOutputStream;, java.io.File; etc.
public class Screenshoat extends AppCompatActivity {
Button btnScreenshot;
Bitmap mbitmap;
ImageView imageView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_screenshoat);
btnScreenshot = (Button) findViewById(R.id.btnScreenshot);
imageView = (ImageView) findViewById(R.id.imageView);
btnScreenshot.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mbitmap = getBitmapOFRootView(v);
imageView.setImageBitmap(mbitmap);
createImage(mbitmap);
Toast.makeText(Screenshoat.this, "Screen shoat created", Toast.LENGTH_SHORT).show();
}
});
}
public Bitmap getBitmapOFRootView(View v) {
View rootview = v.getRootView();
rootview.setDrawingCacheEnabled(true);
Bitmap bitmap1 = rootview.getDrawingCache();
return bitmap1;
}
public void createImage(Bitmap bmp) {
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.JPEG, 40, bytes);
File file = new File(Environment.getExternalStorageDirectory() +
"/capturedscreenandroid.jpg");
try {
file.createNewFile();
FileOutputStream outputStream = new FileOutputStream(file);
outputStream.write(bytes.toByteArray());
outputStream.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
Add Permission to read and write external storage
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

ImageView not fitting sides of screen

Well my app should let me take a picture of my face and display it until i delete it where I can take another one. What is happening when I first open the app is that the pink side lines of the layout backround shows but when I take a picture the pink lines dissapear. This shouldnt happen because the imageview that i am setting the backround bitmap to is match_parent on width and height
The second problem is that the when I set the background imageview back to the background before which is transparent in the center so you can see where the camera is pointing does not happen even though I set it back. The screen should revert back to the transparent center but it stays the screenshot that is taken when takePicture is run. Thanks for any help as i am ripping my hair out right now
background_view = (ImageView) view.findViewById(R.id.backround_view);
background = BitmapFactory.decodeResource(getResources(), R.drawable.camera_backround);
background_view.setImageBitmap(background);
private void takePicture() {
if (picturePresent == false) {
edit_button.setVisibility(View.INVISIBLE);
pictureBitmap = getBitmapFromView();
edit_button.setVisibility(View.VISIBLE);
closeCamera();
stopBackgroundThread();
BitmapDrawable bitmapDrawable = new BitmapDrawable(getResources(), pictureBitmap);
background_view.setBackground(bitmapDrawable);
picturePresent = true;
} else {
}
}
private void deletePicture() {
if (picturePresent == true) {
startBackgroundThread();
openCamera(mTextureView.getWidth(), mTextureView.getHeight());
background_view.setImageBitmap(background);
picturePresent = false;
} else {
}
}
public Bitmap getBitmapFromView() {
Bitmap bitmap = mTextureView.getBitmap();
Bitmap bitmap2 = BitmapFactory. decodeResource(getResources(), R.drawable.camera_backround);
Bitmap bmOverlay = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), bitmap.getConfig());
Canvas canvas = new Canvas(bmOverlay);
canvas.drawBitmap(bitmap, new Matrix(), null);
canvas.drawBitmap(bitmap2, new Matrix(), null);
return bmOverlay;
}
XML
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="yourfacelivewallpaper.alexcz.yourfacelivewallpaper.CameraFragment"
android:background="#ffbf1ec5">
<!-- TODO: Update blank fragment layout -->
<view
android:layout_width="fill_parent"
android:layout_height="fill_parent"
class="yourfacelivewallpaper.alexcz.yourfacelivewallpaper.AutoFitTextureView"
android:id="#+id/texture"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"/>
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/backround_view"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
android:longClickable="false"
android:layout_alignParentEnd="true"
android:layout_alignParentStart="true"/>

android:scaleType="fitXY"
Add above code in xml file.

If your image is smaller than your ImageView it won't fill the screen. You should add android:scaleType="fitCenter" to your ImageView's layout properties.

how to create bitmap of scollview of images in android?

I’ve made a demo for film-strip in ,android. I am binding Images to my LinearLayout runtime, Now i want to save whole, Scrollable View to a bitmap, I have tried a lot but all gives solution to only save current visible screen to bitmap,can anyone please help me how to save whole scrollable View(Which is not visible to screen) in a bitmap, my code is as below:
xml
<HorizontalScrollView
android:id="#+id/horizontal_scroll_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="55dp"
android:layout_centerHorizontal="true"
android:layout_marginBottom="55dp"
android:scrollbars="none" >
<ScrollView
android:id="#+id/scroler"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fillViewport="true"
android:scrollbars="none" >
<LinearLayout
android:id="#+id/mygallery"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical" />
</ScrollView>
</HorizontalScrollView>
java
View insertPhoto(int i) {
LinearLayout layout = new LinearLayout(getApplicationContext());
layout.setLayoutParams(new LayoutParams(252, 252));
layout.setGravity(Gravity.FILL);
final ImageView imageView = new ImageView(getApplicationContext());
imageView1 = new ImageView(getApplicationContext());
imageView.setLayoutParams(new LayoutParams(250, 250));
imageView.setScaleType(ImageView.ScaleType.FIT_XY);
imageLoader.displayImage("file://" + dataT.get(i).sdcardPath,
imageView, new SimpleImageLoadingListener() {
public void onLoadingStarted(String imageUri, View view) {
imageView.setImageResource(R.drawable.no_media);
super.onLoadingStarted(imageUri, view);
}
});
layout.addView(imageView);
return layout;
}
using this I’ve made film-strip in vertical orientation. And now I want bitmap of this film-strip for save it.

public static Bitmap loadBitmapFromView(View v) {
Bitmap b = null;
v.measure(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
b = Bitmap.createBitmap(v.getMeasuredWidth(),
v.getMeasuredHeight(), Bitmap.Config.ARGB_8888);
Canvas c = new Canvas(b);
v.layout(0, 0, v.getMeasuredWidth(), v.getMeasuredHeight());
v.draw(c);
saveImageToInternalStorage(b);
return b;
}

ImageView size is changed when changing the image

I have the problem that I have a layout with an ImageView. With AsyncTask I load an image from the web. It is a panorama picture. If I start up the Fragment, the image I load with src="#drawable/pano" is shown perfectly. It has full height and I can scroll through the panorama.
As soon as the new image is loaded into the ImageView the imageview rescales so that the height is:
Before the AsyncTask (Image is loaded from drawables...):
And this is after the AsyncTask loaded the image:
Here is my xml file:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<HorizontalScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerInParent="true"
android:overScrollMode="never"
android:scrollbars="none" >
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="match_parent" >
<ImageView
android:id="#+id/img1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentTop="true"
android:adjustViewBounds="true"
android:scaleType="fitCenter"
android:src="#drawable/pano" />
</RelativeLayout>
</HorizontalScrollView>
AsyncTask Code:
public class DownloadPanorama extends
AsyncTask<ImageView, Void, Bitmap> {
ImageView imageView;
Bitmap bm;
public DownloadPanorama(ImageView mChart) {
imageView = mChart;
}
#Override
protected Bitmap doInBackground(ImageView... imageViews) {
return download_Image((String) imageView.getTag());
}
#Override
protected void onPostExecute(Bitmap result) {
imageView.setImageBitmap(result);
}
private Bitmap download_Image(String url) {
Bitmap bm = null;
try {
URL aURL = new URL(url);
URLConnection conn = aURL.openConnection();
conn.connect();
InputStream is = conn.getInputStream();
BufferedInputStream bis = new BufferedInputStream(is);
bm = BitmapFactory.decodeStream(bis);
bis.close();
is.close();
return bm;
}
}
Also happens when not using AsyncTask and only using raw setImageBitmap... So I don't know if I have to change the scaleType in my xml file or if I need to set it again after loading a new image?

I would try changing:
android:layout_height="wrap_content"
to
android:layout_height="fill_parent"
in your ImageView.
If that doesn't work, you might be able to scale your bitmap:
myBitmap = Bitmap.createScaledBitmap(myBitmap, width, height,true);

EDIT
It sounds like from your comments and updated question that you know the size you would like the image to be (1200x400). You have two things you can do to get this size. The first, and recommended, is to replace the line
bm = BitmapFactory.decodeStream(bis);
with
BitmapFactory.Options options = new BitmapFactory.Options();
options.outWidth=1200;
options.outHeight=400;
bm = BitmapFactory.decodeStream(bis, new Rect(0,0,0,0), options);
The other option is to change your View bounds. In your comments above, it sounds like the bounds might change, so you would have to repeat this each time you loaded a new image of different size:
RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams) imageView.getLayoutParams();
params.width = 1200;
params.height = 400;
imageView.setLayoutParams(params);
You need to change
android:adjustViewBounds="true"
to
android:adjustViewBounds="false"

How can i capture my cameraview and my customview over camera simultaneously android

I am making an app in which i am opening a camera and above the camera i am drawing a flower picture from a custom view canvas object. Now i want to take picture what should i do to take picture of camera with that flower.

I have used this layout for that
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="#+id/layoutCam">
<FrameLayout
android:id="#+id/preview"
android:layout_weight="1"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
</FrameLayout>
<ImageView
android:id="#+id/imgHole"
android:layout_height="fill_parent"
android:layout_width="fill_parent"
android:layout_gravity="center"/>
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:text="Take Snap"
android:id="#+id/btnTakeSnap"/>
</FrameLayout>
and java code is
public void onClick(View v)
{
preview.camera.takePicture(shutterCallback, rawCallback, postViewCallback, jpegCallback);
chal();
}
private boolean chal()
{
buttonTakeSnap.setVisibility(View.INVISIBLE);
View v1 = camView.getChildAt(1);
v1.setDrawingCacheEnabled(true);
v1.buildDrawingCache();
bmp = v1.getDrawingCache();
v1.setDrawingCacheEnabled(true);
buttonTakeSnap.setVisibility(View.VISIBLE);
Toast.makeText(this, "Akhtitaam", Toast.LENGTH_SHORT).show();
return true;
}
using this code i got two bitmaps one from chal(); method and second from jpegCallBack(); method now you can put these bitmaps on a same layout to overlap and capture that view
Using this code
Use this method to capture views
public static Bitmap loadBitmapFromView(View v)
{
Paint drawPaint = new Paint(Paint.FILTER_BITMAP_FLAG);
drawPaint.setAntiAlias(false);
drawPaint.setFilterBitmap(false);
Bitmap b = Bitmap.createBitmap(v.getWidth(), v.getHeight(), Bitmap.Config.ARGB_8888);
Canvas c = new Canvas(b);
c.drawBitmap(b, 0, 0, drawPaint);
v.draw(c);
return b;
}
pass your camera's surface view as a parameter like this
View view=(YourParentLayout) findViewById(R.id.YourParentLayout);
loadBitmapFromView(view);