Почему я не могу сохранить FrameLayout как растровое изображение и сохранить его в телефоне?

Question

Я хочу сохранить FrameLayout как изображение и сохранить его в своем телефоне. FrameLayout находится в относительной компоновке. FrameLayout имеет ImageView и TextView.

public class ImageText extends AppCompatActivity { 
private static final String TAG = " a "; 
FrameLayout frameLayout; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_image_text); 
    final FrameLayout frameLayout = (FrameLayout)findViewById(R.id.frame); 
    TextView tv1=(TextView)findViewById(R.id.textView1); 

    Intent intent=getIntent(); 
    tv1.setText(intent.getStringExtra("text")); 


    Button bt = (Button) findViewById(R.id.button3); 
    bt.setOnClickListener(new View.OnClickListener() { 
     public void onClick(View v) { 
      isStoragePermissionGranted(); 
      saveFrameLayout(frameLayout); 
     } 

    }); 
} 


     public static void saveFrameLayout(FrameLayout frameLayout) { 
     frameLayout.setDrawingCacheEnabled(true); 
     frameLayout.buildDrawingCache(); 
     Bitmap cache = frameLayout.getDrawingCache(); 
     frameLayout.setDrawingCacheEnabled(false); 

     try { 
      FileOutputStream fileOutputStream = new FileOutputStream(Environment.getExternalStorageDirectory()+ "file.png"); 
      cache.compress(Bitmap.CompressFormat.PNG, 100, fileOutputStream); 
      fileOutputStream.flush(); 
      fileOutputStream.close(); 
     } catch (Exception e) { 
      e.printStackTrace(); 
     } finally { 
      frameLayout.destroyDrawingCache(); 

     } 
    } 
public boolean isStoragePermissionGranted() { 
    if (Build.VERSION.SDK_INT >= 23) { 
     if (checkSelfPermission(android.Manifest.permission.WRITE_EXTERNAL_STORAGE) 
       == PackageManager.PERMISSION_GRANTED) { 
      Log.v(TAG,"Permission is granted"); 
      return true; 
     } else { 

      Log.v(TAG,"Permission is revoked"); 
      ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 1); 
      return false; 
     } 
    } 
    else { //permission is automatically granted on sdk<23 upon installation 
     Log.v(TAG,"Permission is granted"); 
     return true; 
    } 
} 

} 

Планировка:

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:tools="http://schemas.android.com/tools" 
android:id="@+id/activity_image_text" 
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="com.example.user.notesk1.ImageText"> 
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
    android:id="@+id/frame" 
    > 

    <ImageView 
     android:id="@+id/imageView1" 
     android:layout_width="match_parent" 
     android:layout_height="300dp" 
     android:src="@drawable/a" 
     android:layout_gravity="center" 

     /> 

    <TextView 
    android:id="@+id/textView1" 
    android:layout_width="250dp" 
    android:layout_height="wrap_content" 
     android:layout_gravity="center" 
    android:text="text" 
     android:textColor="#ffffff" 
    android:textAppearance="?android:attr/textAppearanceLarge" /> 

</FrameLayout> 

<Button 
    android:text="Save" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_marginBottom="16dp" 
    android:id="@+id/button3" 
    android:layout_alignParentBottom="true" 
    android:layout_centerHorizontal="true" /> 

</RelativeLayout> 

LogCat:

01-02 12:03:26.941 5166-10018/? W/System.err: remove failed: ENOENT (No such file or directory) : /data/user/0/com.touchtype.swiftkey/files/iris_messages_cache 
    01-02 12:03:26.961 8083-8083/? W/System.err: java.io.FileNotFoundException: /storage/emulated/0file.png: open failed: EACCES (Permission denied) 
    01-02 12:03:26.971 8083-8083/? W/System.err:  at libcore.io.IoBridge.open(IoBridge.java:452) 
    01-02 12:03:26.971 8083-8083/? W/System.err:  at java.io.FileOutputStream.<init>(FileOutputStream.java:87) 
    01-02 12:03:26.971 8083-8083/? W/System.err:  at java.io.FileOutputStream.<init>(FileOutputStream.java:127) 
    01-02 12:03:26.971 8083-8083/? W/System.err:  at java.io.FileOutputStream.<init>(FileOutputStream.java:116) 
    01-02 12:03:26.971 8083-8083/? W/System.err:  at com.example.user.notesk1.ImageText.saveFrameLayout(ImageText.java:58) 
    01-02 12:03:26.971 8083-8083/? W/System.err:  at com.example.user.notesk1.ImageText$1.onClick(ImageText.java:44) 
    01-02 12:03:26.971 8083-8083/? W/System.err:  at android.view.View.performClick(View.java:5714) 
    01-02 12:03:26.971 8083-8083/? W/System.err:  at android.widget.TextView.performClick(TextView.java:10926) 
    01-02 12:03:26.971 8083-8083/? W/System.err:  at android.view.View$PerformClick.run(View.java:22589) 
01-02 12:03:26.971 8083-8083/? W/System.err:  at android.os.Handler.handleCallback(Handler.java:739) 
01-02 12:03:26.971 8083-8083/? W/System.err:  at android.os.Handler.dispatchMessage(Handler.java:95) 
01-02 12:03:26.971 8083-8083/? W/System.err:  at android.os.Looper.loop(Looper.java:148) 
01-02 12:03:26.971 8083-8083/? W/System.err:  at android.app.ActivityThread.main(ActivityThread.java:7325) 
01-02 12:03:26.971 8083-8083/? W/System.err:  at java.lang.reflect.Method.invoke(Native Method) 
01-02 12:03:26.971 8083-8083/? W/System.err:  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230) 
01-02 12:03:26.971 8083-8083/? W/System.err:  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120) 
01-02 12:03:26.971 8083-8083/? W/System.err: Caused by: android.system.ErrnoException: open failed: EACCES (Permission denied) 
01-02 12:03:26.971 8083-8083/? W/System.err:  at libcore.io.Posix.open(Native Method) 
01-02 12:03:26.971 8083-8083/? W/System.err:  at libcore.io.BlockGuardOs.open(BlockGuardOs.java:186) 
01-02 12:03:26.971 8083-8083/? W/System.err:  at libcore.io.IoBridge.open(IoBridge.java:438) 
01-02 12:03:26.971 8083-8083/? W/System.err: ... 15 more 

Answer 1

попробовать следующее:

изменить метод isStoragePermissionGranted()

private void isStoragePermissionGranted() { 
     if (Build.VERSION.SDK_INT >= 23) { 
      if (!checkIfAlreadyhavePermission()) { 
       ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 1); 
      } else { 
       saveFrameLayout(frameLayout); 
      } 
     } else { 
      saveFrameLayout(frameLayout); 
     } 
    } 

private boolean checkIfAlreadyhavePermission() { 
    int result = ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE); 
    return result == PackageManager.PERMISSION_GRANTED; 
} 

поймать результат разрешения:

public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) { 
    switch (requestCode) { 
     case 1: { 
      // If request is cancelled, the result arrays are empty. 
      if (grantResults.length > 0 
        && grantResults[0] == PackageManager.PERMISSION_GRANTED) { 
       saveFrameLayout(frameLayout); 

      } else { 
       permission_denied(); 
      } 
      break; 
     } 
     // other 'case' lines to check for other 
     // permissions this app might request 
    } 
} 

public void permission_denied() { 
    // permission was not granted 
    if (ActivityCompat.shouldShowRequestPermissionRationale(ImageText.this, 
      Manifest.permission.WRITE_EXTERNAL_STORAGE)) { 
     showDialogOK("Permission is required for register", 
       new DialogInterface.OnClickListener() { 
        @Override 
        public void onClick(DialogInterface dialog, int which) { 
         switch (which) { 
          case DialogInterface.BUTTON_POSITIVE: 
           showCity(); 
           break; 
          case DialogInterface.BUTTON_NEGATIVE: 
           // proceed with logic by disabling the related features or quit the app. 
           break; 
         } 
        } 
       }); 
    } //permission is denied (and never ask again is checked) 
    //shouldShowRequestPermissionRationale will return false 
    else { 
     Toast.makeText(getApplicationContext(), "Go to settings and enable External storage permissions", Toast.LENGTH_LONG).show(); 
    } 
} 

показать диалог для разрешения:

private void showDialogOK(String message, DialogInterface.OnClickListener okListener) { 
    new AlertDialog.Builder(getActivity()) 
      .setMessage(message) 
      .setPositiveButton("OK", okListener) 
      .setNegativeButton("Cancel", okListener) 
      .create() 
      .show(); 
} 

надеюсь, что это будет решать ваши проблемы, связанные с разрешениями ...