Разрешение запрещено при сохранении файла во внешнем хранилище

Question

Моя цель - скопировать файл изображения из внутреннего хранилища (данные/данные/myproject/...) во внешнее хранилище (галерея). Я просто перечислил пример кода:

public class MainActivity extends ActionBarActivity { 
    private static final int REQUEST_CODE = 1; 

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

    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.main, menu); 
     return true; 
    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     // Handle action bar item clicks here. The action bar will 
     // automatically handle clicks on the Home/Up button, so long 
     // as you specify a parent activity in AndroidManifest.xml. 
     int id = item.getItemId(); 
     if (id == R.id.action_settings) { 
      return true; 
     } 
     return super.onOptionsItemSelected(item); 
    } 


    public void openActivity(View view){ 
     Intent intent = new Intent(Intent.ACTION_GET_CONTENT); 
     intent.setType("image/jpeg"); 
     startActivityForResult(Intent.createChooser(intent,"Select iamge"), REQUEST_CODE); 
    } 

    @Override 
    protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
     if (requestCode == REQUEST_CODE && resultCode == Activity.RESULT_OK){ 
      String image_path = getRealPathFromUri(this, data.getData()); 
      File externalInput = new File(image_path); 
      File internalCopy = new File(getFilesDir(), temp_image.replace(".jpg", ".OUT.jpg")); 
      File externalCopy = new File(image_path.replace(".jpg", ".OUT.jpg")); 

      try { 
       copyFile(new FileInputStream(externalInput),new FileOutputStream(internalCopy)); 
       System.out.println("Copied into internal Storage OK"); 
      } catch (FileNotFoundException e) { 
       // TODO Auto-generated catch block 
       System.out.println("NOT Copied into internal Storage ERR"); 
       e.printStackTrace(); 
      } catch (IOException e) { 
       // TODO Auto-generated catch block 
       e.printStackTrace(); 
      } 


      /* here some image manipulation are performed */ 



      if(!externalCopy.getParentFile().exists()){ 
       externalCopy.getParentFile().mkdirs(); 
       System.out.println("Created directories ..."); 
      }else{ 
       System.out.println("Directories already OK"); 
      } 

      try { 
       copyFile(new FileInputStream(internalCopy),new FileOutputStream(externalCopy)); 
       System.out.println("Copied into external Storage OK"); 
      } catch (FileNotFoundException e) { 
       // TODO Auto-generated catch block 
       System.out.println("NOT Copied into external Storage ERR"); 
       e.printStackTrace(); 
      } catch (IOException e) { 
       // TODO Auto-generated catch block 
       e.printStackTrace(); 
       System.out.println("NOT Copied into external Storage ERR"); 
      } 
     } 

     super.onActivityResult(requestCode, resultCode, data); 
    } 

    public void quitActivity(View view){ 
     android.os.Process.killProcess(android.os.Process.myPid()); 
     System.exit(1);  
    } 

    public static String getRealPathFromUri(Context context, Uri contentUri) { 
      Cursor cursor = null; 
      try { 
       String[] proj = { MediaStore.Images.Media.DATA }; 
       cursor = context.getContentResolver().query(contentUri, proj, null, null, null); 
       int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA); 
       cursor.moveToFirst(); 
       return cursor.getString(column_index); 
      } finally { 
       if (cursor != null) { 
        cursor.close(); 
       } 
      } 
    } 

    public void copyFile(InputStream in, OutputStream out) throws IOException { 
     byte[] buffer = new byte[1024]; 
     int read; 
     while((read = in.read(buffer)) != -1){ 
      out.write(buffer, 0, read); 
     } 
    } 

} 

Таким образом, копия файла не копируется для разрешенных прав! Если я попробую externalCopy.getParentFile(), canWrite() результат будет ложным.

Вы можете найти после выхода LogCat:

12-01 22:02:02.271: D/ActivityThread(22255): setTargetHeapUtilization:0.25 
12-01 22:02:02.271: D/ActivityThread(22255): setTargetHeapIdealFree:8388608 
12-01 22:02:02.271: D/ActivityThread(22255): setTargetHeapConcurrentStart:2097152 
12-01 22:02:02.601: I/dalvikvm(22255): Could not find method android.view.ViewGroup.onNestedScrollAccepted, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onNestedScrollAccepted 
12-01 22:02:02.601: W/dalvikvm(22255): VFY: unable to resolve virtual method 11385: Landroid/view/ViewGroup;.onNestedScrollAccepted (Landroid/view/View;Landroid/view/View;I)V 
12-01 22:02:02.601: D/dalvikvm(22255): VFY: replacing opcode 0x6f at 0x0000 
12-01 22:02:02.601: I/dalvikvm(22255): Could not find method android.view.ViewGroup.onStopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onStopNestedScroll 
12-01 22:02:02.601: W/dalvikvm(22255): VFY: unable to resolve virtual method 11391: Landroid/view/ViewGroup;.onStopNestedScroll (Landroid/view/View;)V 
12-01 22:02:02.601: D/dalvikvm(22255): VFY: replacing opcode 0x6f at 0x0000 
12-01 22:02:02.621: I/dalvikvm(22255): Could not find method android.support.v7.internal.widget.ActionBarOverlayLayout.stopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.setHideOnContentScrollEnabled 
12-01 22:02:02.621: W/dalvikvm(22255): VFY: unable to resolve virtual method 8963: Landroid/support/v7/internal/widget/ActionBarOverlayLayout;.stopNestedScroll()V 
12-01 22:02:02.621: D/dalvikvm(22255): VFY: replacing opcode 0x6e at 0x000e 
12-01 22:02:02.661: I/dalvikvm(22255): Could not find method android.view.ViewGroup.onRtlPropertiesChanged, referenced from method android.support.v7.widget.Toolbar.onRtlPropertiesChanged 
12-01 22:02:02.661: W/dalvikvm(22255): VFY: unable to resolve virtual method 11388: Landroid/view/ViewGroup;.onRtlPropertiesChanged (I)V 
12-01 22:02:02.661: D/dalvikvm(22255): VFY: replacing opcode 0x6f at 0x0007 
12-01 22:02:02.671: I/dalvikvm(22255): Could not find method android.content.res.TypedArray.getChangingConfigurations, referenced from method android.support.v7.internal.widget.TintTypedArray.getChangingConfigurations 
12-01 22:02:02.671: W/dalvikvm(22255): VFY: unable to resolve virtual method 366: Landroid/content/res/TypedArray;.getChangingConfigurations()I 
12-01 22:02:02.671: D/dalvikvm(22255): VFY: replacing opcode 0x6e at 0x0002 
12-01 22:02:02.671: I/dalvikvm(22255): Could not find method android.content.res.TypedArray.getType, referenced from method android.support.v7.internal.widget.TintTypedArray.getType 
12-01 22:02:02.671: W/dalvikvm(22255): VFY: unable to resolve virtual method 388: Landroid/content/res/TypedArray;.getType (I)I 
12-01 22:02:02.671: D/dalvikvm(22255): VFY: replacing opcode 0x6e at 0x0002 
12-01 22:02:02.901: D/libEGL(22255): loaded /system/lib/egl/libEGL_adreno200.so 
12-01 22:02:02.941: D/libEGL(22255): loaded /system/lib/egl/libGLESv1_CM_adreno200.so 
12-01 22:02:02.941: D/libEGL(22255): loaded /system/lib/egl/libGLESv2_adreno200.so 
12-01 22:02:02.941: I/Adreno200-EGL(22255): <qeglDrvAPI_eglInitialize:299>: EGL 1.4 QUALCOMM build: AU_LINUX_ANDROID_JB_REL_2.0.3.04.01.02.21.107_msm8625_JB_REL_2.0.3_CL3357771_release_AU (CL3357771) 
12-01 22:02:02.941: I/Adreno200-EGL(22255): Build Date: 02/25/13 Mon 
12-01 22:02:02.941: I/Adreno200-EGL(22255): Local Branch: 
12-01 22:02:02.941: I/Adreno200-EGL(22255): Remote Branch: quic/jb_rel_2.0.3 
12-01 22:02:02.941: I/Adreno200-EGL(22255): Local Patches: NONE 
12-01 22:02:02.941: I/Adreno200-EGL(22255): Reconstruct Branch: AU_LINUX_ANDROID_JB_REL_2.0.3.04.01.02.21.107 + NOTHING 
12-01 22:02:03.041: D/OpenGLRenderer(22255): Enabling debug mode 0 
12-01 22:02:11.861: D/AbsListView(22255): Get MotionRecognitionManager 
12-01 22:02:17.711: I/System.out(22255): Copied into internal Storage OK 
12-01 22:02:17.711: I/System.out(22255): Directories already OK 
12-01 22:02:17.721: I/System.out(22255): NOT Copied into external Storage ERR 
12-01 22:02:17.731: W/System.err(22255): java.io.FileNotFoundException: /storage/sdcard0/DCIM/Camera/20141201_185225.OUT.jpg: open failed: EACCES (Permission denied) 
12-01 22:02:17.761: W/System.err(22255): at libcore.io.IoBridge.open(IoBridge.java:416) 
12-01 22:02:17.761: W/System.err(22255): at java.io.FileOutputStream.<init>(FileOutputStream.java:88) 
12-01 22:02:17.761: W/System.err(22255): at java.io.FileOutputStream.<init>(FileOutputStream.java:73) 
12-01 22:02:17.761: W/System.err(22255): at it.pittuzzo.fucre.MainActivity.onActivityResult(MainActivity.java:91) 
12-01 22:02:17.761: W/System.err(22255): at android.app.Activity.dispatchActivityResult(Activity.java:5387) 
12-01 22:02:17.761: W/System.err(22255): at android.app.ActivityThread.deliverResults(ActivityThread.java:3205) 
12-01 22:02:17.771: W/System.err(22255): at android.app.ActivityThread.handleSendResult(ActivityThread.java:3252) 
12-01 22:02:17.771: W/System.err(22255): at android.app.ActivityThread.access$1200(ActivityThread.java:143) 
12-01 22:02:17.771: W/System.err(22255): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1289) 
12-01 22:02:17.771: W/System.err(22255): at android.os.Handler.dispatchMessage(Handler.java:99) 
12-01 22:02:17.771: W/System.err(22255): at android.os.Looper.loop(Looper.java:137) 
12-01 22:02:17.771: W/System.err(22255): at android.app.ActivityThread.main(ActivityThread.java:4960) 
12-01 22:02:17.781: W/System.err(22255): at java.lang.reflect.Method.invokeNative(Native Method) 
12-01 22:02:17.781: W/System.err(22255): at java.lang.reflect.Method.invoke(Method.java:511) 
12-01 22:02:17.781: W/System.err(22255): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038) 
12-01 22:02:17.781: W/System.err(22255): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805) 
12-01 22:02:17.781: W/System.err(22255): at dalvik.system.NativeStart.main(Native Method) 
12-01 22:02:17.781: W/System.err(22255): Caused by: libcore.io.ErrnoException: open failed: EACCES (Permission denied) 
12-01 22:02:17.781: W/System.err(22255): at libcore.io.Posix.open(Native Method) 
12-01 22:02:17.781: W/System.err(22255): at libcore.io.BlockGuardOs.open(BlockGuardOs.java:110) 
12-01 22:02:17.781: W/System.err(22255): at libcore.io.IoBridge.open(IoBridge.java:400) 
12-01 22:02:17.791: W/System.err(22255): ... 16 more 
12-01 22:02:19.761: I/Process(22255): Sending signal. PID: 22255 SIG: 9 

После первых строк моего ManifestActivity.xml

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="it.pittuzzo.fucre" 
    android:versionCode="1" 
    android:versionName="1.0" > 
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> 

    <uses-sdk 
     android:minSdkVersion="14" 
     android:targetSdkVersion="21" /> 

    <application 
     android:allowBackup="true" 
     android:icon="@drawable/ic_launcher" 
     android:label="@string/app_name" 
     android:theme="@style/AppTheme" > 
     <activity 
      android:name=".MainActivity" 

Я работаю на реальном устройстве: Mobile Samsung Ядра с Android 4.1.2 и планшет Samsung Note 2014 Andorid 4.3. Кажется, что это не связано с кодом, потому что я копирую/вставляю много примеров, найденных в Интернете, и все тот же результат (может кто-нибудь попробовать мой код, чтобы проверить, не сталкивается ли тот же результат?).

Я действительно не могу понять ...

Answer 1

Вы можете использовать только openFileOutput() для относительных путей в стажера памяти. Для использования внешней памяти new FileOutputStream(..absolute..path..).