Screen.java

package com.bgt.viewtopdf;

import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.media.MediaScannerConnection;
import android.net.Uri;
import android.os.Environment;
import android.support.v4.widget.NestedScrollView;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;

import com.tarek360.instacapture.Instacapture;
import com.tarek360.instacapture.listener.SimpleScreenCapturingListener;

import java.io.File;
import java.io.FileOutputStream;

public class MainActivity extends AppCompatActivity {

    private static final String TAG = "MAIN" ;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    public void mPDF(View view) {

//        Instacapture.INSTANCE.capture(this, new SimpleScreenCapturingListener() {
//            @Override
//            public void onCaptureComplete(Bitmap bitmap) {
//                if (bitmap!=null){
//                    Log.e(TAG, "onCaptureComplete: "+String.valueOf(bitmap) );
//                    File mediaStorageDir = new File(Environment.getExternalStorageDirectory(), "Image");
//
//                    if (!mediaStorageDir.exists()) {
//                        if (!mediaStorageDir.mkdirs()) {
//                            Log.d("App", "failed to create directory");
//                        }
//                    }
//                    try {
//                        File file = new File(mediaStorageDir, "share_image_" + System.currentTimeMillis() + ".png");
//                        FileOutputStream out = new FileOutputStream(file);
//                        bitmap.compress(Bitmap.CompressFormat.JPEG, 100, out);
//
//                        MediaScannerConnection.scanFile(getApplicationContext(), new String[]{file.toString()}, null,
//                                new MediaScannerConnection.OnScanCompletedListener() {
//                                    public void onScanCompleted(String path, Uri uri) {
//
//                                    }
//                                });
//                    }
//                    catch (Exception e){
//                        e.fillInStackTrace();
//                    }
//
//
//
//                }
//
//            }
//        }, (View) findViewById(R.id.bt));
        NestedScrollView z = (NestedScrollView) findViewById(R.id.scroll_view);
        int totalHeight = z.getChildAt(0).getHeight();
        int totalWidth = z.getChildAt(0).getWidth();

        Bitmap screenShot = loadBitmapFromView(findViewById(R.id.scroll_view),totalWidth,totalHeight);
        //Bitmap screenShot = mGetBitmap(findViewById(R.id.scroll_view));

        File mediaStorageDir = new File(Environment.getExternalStorageDirectory(), "Image");

        if (!mediaStorageDir.exists()) {
            if (!mediaStorageDir.mkdirs()) {
                Log.d("App", "failed to create directory");
            }
        }
        try {
            File file = new File(mediaStorageDir, "share_image_" + System.currentTimeMillis() + ".png");
            FileOutputStream out = new FileOutputStream(file);
            screenShot.compress(Bitmap.CompressFormat.JPEG, 100, out);
            out.close();
            MediaScannerConnection.scanFile(this, new String[]{file.toString()}, null,
                    new MediaScannerConnection.OnScanCompletedListener() {
                        public void onScanCompleted(String path, Uri uri) {

                        }
                    });

        }
        catch (Exception e){
            e.fillInStackTrace();
        }



    }

    private Bitmap mGetBitmap(View view) {

        view.setDrawingCacheEnabled(true);
        NestedScrollView z = (NestedScrollView) findViewById(R.id.scroll_view);
        int totalHeight = z.getChildAt(0).getHeight();
        int totalWidth = z.getChildAt(0).getWidth();
        view.layout(0, 0, totalWidth, totalHeight);
        view.buildDrawingCache(true);
        Bitmap b = Bitmap.createBitmap(view.getDrawingCache());
        view.setDrawingCacheEnabled(false);
        return b;
    }
    public static Bitmap loadBitmapFromView(View v, int width, int height) {
        Bitmap b = Bitmap.createBitmap(width , height, Bitmap.Config.ARGB_8888);
        Canvas c = new Canvas(b);
        v.layout(0, 0, v.getLayoutParams().width, v.getLayoutParams().height);
        v.draw(c);
        return b;
    }
}