Adnroid activity screenshot save display to album view display picture animation disappear

Today's project has a requirement , screenshots Activity Interface , Save to local , Then you can find this picture and send it when you send it instantly

---

technological process ： screenshots -> Save to local -> Send broadcast notification to update gallery

First paste the effect picture

Screen capture process

File saved after screen capture

Screenshot pictures

1、 Write a ScreenCaptureUtil Tools , Screen capture and save , The code is as follows

/** * Created by nxm on 2018/1/20. */

public class ScreenCaptureUtil {
    

    private static ScreenCaptureUtil instance = null;

    private ScreenCaptureUtil() {
    }

    public static ScreenCaptureUtil getInstance() {
        if (null == instance) {
            instance = new ScreenCaptureUtil();
        }
        return instance;
    }

    public Bitmap getScreen(Activity activity) {
        View dView = activity.getWindow().getDecorView();
        dView.setDrawingCacheEnabled(false);
        dView.buildDrawingCache();
        Bitmap bitmap = Bitmap.createBitmap(dView.getDrawingCache());
        if (bitmap != null) {
            try {
                //  First save the picture 
                String storePath = Environment.getExternalStorageDirectory().getAbsolutePath() + File.separator + "HIS";
                File appDir = new File(storePath);
                if (!appDir.exists()) {
                    appDir.mkdir();
                }
                String fileName = System.currentTimeMillis() + ".jpg";
                File file = new File(appDir, fileName);

                BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(file));
                bitmap.compress(Bitmap.CompressFormat.JPEG, 80, bos);
                bos.flush();
                bos.close();

                Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
                Uri uri = Uri.fromFile(file);
                intent.setData(uri);
                activity.sendBroadcast(intent);
                dView.destroyDrawingCache();
                return bitmap;
            } catch (Exception e) {
                return null;
            }
        } else {
            return null;
        }
    }
}

a key ：
1） obtain activity Screenshot generation Bitmap

   View dView = activity.getWindow().getDecorView();
   dView.setDrawingCacheEnabled(false);
   dView.buildDrawingCache();
   Bitmap bitmap = Bitmap.createBitmap(dView.getDrawingCache());

2） Create file path preservation bitmap（ Save to album root ->File.separator）

     //  First save the picture 
                String storePath = Environment.getExternalStorageDirectory().getAbsolutePath() + File.separator + "HIS";
                File appDir = new File(storePath);
                if (!appDir.exists()) {
                    appDir.mkdir();
                }
                String fileName = System.currentTimeMillis() + ".jpg";
                File file = new File(appDir, fileName);

                BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(file));
                bitmap.compress(Bitmap.CompressFormat.JPEG, 80, bos);
                bos.flush();
                bos.close();

3) Send a broadcast to notify the album to refresh and add this picture

 Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
 Uri uri = Uri.fromFile(file);
 intent.setData(uri);
 activity.sendBroadcast(intent);

4） Destroy cache （ Not destroyed , Always save the contents of the first page ）

  dView.destroyDrawingCache();

2、 stay activity Use in （ The project requirement is after the screen capture , Show me , Then the animation exits and disappears ）

 case R.id.btn_two:
                // screenshots 
                Bitmap screen = ScreenCaptureUtil.getInstance().getScreen(MainActivity.this);
                String content = "";
                if (null != screen) {
                    show_screen.setVisibility(View.VISIBLE);
                    showImage.setImageBitmap(screen);
                    Animation animation = AnimationUtils.loadAnimation(MainActivity.this, R.anim.scaleanimation);
                    animation.setFillAfter(true);
                    showImage.startAnimation(animation);
                    content = " Screen capture successful ";
                } else {
                    content = " Screen capture failed ";
                }
                Toast.makeText(MainActivity.this, content, Toast.LENGTH_SHORT).show();
                break;

a key ：
1） Loading animation , And display （ First, judge whether the save is successful bitmap Is it equal to null）

   Animation animation = AnimationUtils.loadAnimation(MainActivity.this, R.anim.scaleanimation);
            animation.setFillAfter(true);
            showImage.startAnimation(animation);

2） Animation scaleanimation.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <scale  android:duration="1000" android:fromXScale="1.0" android:fromYScale="1.0" android:interpolator="@android:anim/accelerate_interpolator" android:pivotX="5%" android:pivotY="5%" android:toXScale="0.0" android:toYScale="0.0" />
</set>

Remember to add read and write permissions

    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />