버튼클릭 -> 화면캡쳐 -> 캡쳐한 이미지를 갤러리에 추가


MainActivity.java

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    //캡쳐버튼클릭
    public void mOnCaptureClick(View v){
        //전체화면
        View rootView = getWindow().getDecorView();
 
        File screenShot = ScreenShot(rootView);
        if(screenShot!=null){
            //갤러리에 추가
            sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.fromFile(screenShot)));
        }
    }
 
    //화면 캡쳐하기
    public File ScreenShot(View view){
        view.setDrawingCacheEnabled(true);  //화면에 뿌릴때 캐시를 사용하게 한다
 
        Bitmap screenBitmap = view.getDrawingCache();   //캐시를 비트맵으로 변환
 
        String filename = "screenshot.png";
        File file = new File(Environment.getExternalStorageDirectory()+"/Pictures", filename);  //Pictures폴더 screenshot.png 파일
        FileOutputStream os = null;
        try{
            os = new FileOutputStream(file);
            screenBitmap.compress(Bitmap.CompressFormat.PNG, 90, os);   //비트맵을 PNG파일로 변환
            os.close();
        }catch (IOException e){
            e.printStackTrace();
            return null;
        }
 
        view.setDrawingCacheEnabled(false);
        return file;
    }
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activity_main.xml

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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/rootLayout"
    android:gravity="center"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
 
    <TextView
        android:textSize="24dp"
        android:gravity="center"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="화면을 캡쳐합니다." />
 
    <Button
        android:text="캡쳐하기"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:onClick="mOnCaptureClick"/>
 
    <ImageView
        android:src="@drawable/ic_launcher"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
</LinearLayout>
 


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AndroidManifest.xml

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<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
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저장소에 파일 쓰기 권한



결과

캡쳐하기 버튼을 누르면 화면을 캡쳐하여 갤러리에 추가한다.

 


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