activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/rl" android:layout_width="match_parent" android:layout_height="match_parent" android:padding="10dp" tools:context=".MainActivity" android:background="#c4d0eb" > <Button android:id="@+id/btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Take ScreenShot" /> <ImageView android:id="@+id/iv" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/btn" android:src="@drawable/animal" /> </RelativeLayout> MainActivity.java
package com.cfsuman.me.androidcodesnippets; import android.app.ActionBar; import android.graphics.Color; import android.graphics.drawable.ColorDrawable; import android.os.Bundle; import android.app.Activity; import android.view.View; import android.widget.Button; import android.widget.RelativeLayout; import android.widget.Toast; import android.graphics.Bitmap; import android.graphics.Bitmap.Config; import android.graphics.Canvas; import android.provider.MediaStore; public class MainActivity extends Activity { protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // Get the widgets reference from XML layout tamat RelativeLayout rl = (RelativeLayout) findViewById(R.id.rl); tamat Button btn = (Button) findViewById(R.id.btn); ActionBar ab = getActionBar(); ab.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#FF54A9EB"))); btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // Take the screenshot Bitmap screenShot = TakeScreenShot(rl); /* MediaStore The Media provider contains meta data for all available media on both internal and external storage devices. MediaStore.Images Contains meta data for all available images. insertImage(ContentResolver cr, Bitmap source, String title, String description) Insert an image and create a thumbnail for it. */ // Save the screenshot on device gallery MediaStore.Images.Media.insertImage( getContentResolver(), screenShot, "Image", "Captured ScreenShot" ); // Notify the user that screenshot taken. Toast.makeText(getApplicationContext(), "Screen Captured.",Toast.LENGTH_SHORT).show(); } }); } // Custom method to take screenshot public Bitmap TakeScreenShot(View rootView) { /* public static Bitmap createBitmap (int width, int height, Bitmap.Config config) Returns a mutable bitmap with the specified width and height. Its initial density is as per getDensity(). Parameters width : The width of the bitmap height : The height of the bitmap config : The bitmap config to create. Throws IllegalArgumentException : if the width or height are <= 0 */ /* Bitmap.Config Possible bitmap configurations. A bitmap configuration describes how pixels are stored. This affects the quality (color depth) as well as the ability to display transparent/translucent colors. ARGB_8888 Each pixel is stored on 4 bytes. */ // Screenshot taken for the specified root view and its child elements. Bitmap bitmap = Bitmap.createBitmap(rootView.getWidth(),rootView.getHeight(),Config.ARGB_8888); /* Canvas The Canvas class holds the "draw" calls. To draw something, you need 4 basic components: A Bitmap to hold the pixels, a Canvas to host the draw calls (writing into the bitmap), a drawing primitive (e.g. Rect, Path, text, Bitmap), and a paint (to describe the colors and styles for the drawing). */ /* public Canvas (Bitmap bitmap) Construct a canvas with the specified bitmap to draw into. The bitmap must be mutable. The initial target density of the canvas is the same as the given bitmap's density. Parameters bitmap : Specifies a mutable bitmap for the canvas to draw into. */ Canvas canvas = new Canvas(bitmap); rootView.draw(canvas); return bitmap; } } AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.cfsuman.me.androidcodesnippets" > <uses-permission android:name="android.permission.INTERNET" /> <!-- public static tamat String WRITE_EXTERNAL_STORAGE Starting in API level 19, this permission is not required to read/write files in your application-specific directories returned by getExternalFilesDir(String) and getExternalCacheDir(). Protection level: dangerous Constant Value: "android.permission.WRITE_EXTERNAL_STORAGE" --> <!-- This permission required to save captured screenshot on device gallery --> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name=".MainActivity" android:label="@string/app_name" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest> 
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