当应用程序从背景中删除时，权限不见了

我要求在运行时在棉花糖和以上设备上的Android应用程序的权限。权限被正确授予，但一旦我杀了应用程序（从后台移除而不是强制停止），权限就消失了，当您再次打开应用程序时，它会再次请求权限。当应用程序从背景中删除时，权限不见了

boolean granted=checkPermission(); 
    Log.d("Permission already there","---"+granted);// it always returns false 

    if (Build.VERSION.SDK_INT >= 23) { 
     System.out.println("Build version is"+Build.VERSION.SDK_INT); 
     if(!granted){ 
      requestPermission(); 
     } 
    } 


    private void requestPermission() { 

    ActivityCompat.requestPermissions(activity,new String[]{ 
      Manifest.permission.ACCESS_FINE_LOCATION, 
      Manifest.permission.RECORD_AUDIO, 
      Manifest.permission.CALL_PHONE, 
      Manifest.permission.CAMERA, 
      Manifest.permission.WRITE_EXTERNAL_STORAGE, 
      Manifest.permission.READ_CONTACTS, 
      Manifest.permission.GET_ACCOUNTS, 

    },RequestPermissionCode); 

} 
@Override 
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) { 
    switch (requestCode) { 

    case RequestPermissionCode: 

     if (grantResults.length > 0) { 

      boolean ACCESS_FINE_LOCATION = grantResults[0] == PackageManager.PERMISSION_GRANTED; 
      boolean RECORD_AUDIO = grantResults[1] == PackageManager.PERMISSION_GRANTED; 
      boolean CALL_PHONE = grantResults[2] == PackageManager.PERMISSION_GRANTED; 
      boolean CAMERA = grantResults[3] == PackageManager.PERMISSION_GRANTED; 
      boolean WRITE_EXTERNAL_STORAGE = grantResults[4] == PackageManager.PERMISSION_GRANTED; 
      boolean GET_ACCOUNTS = grantResults[5] == PackageManager.PERMISSION_GRANTED; 
      boolean READ_CONTACTS = grantResults[6] == PackageManager.PERMISSION_GRANTED; 



      if (ACCESS_FINE_LOCATION && RECORD_AUDIO && CALL_PHONE && CAMERA && WRITE_EXTERNAL_STORAGE && GET_ACCOUNTS && READ_CONTACTS) { 

       Toast.makeText(MainActivity.this, "Permission Granted", Toast.LENGTH_LONG).show(); 
      } 
      else { 
       Toast.makeText(MainActivity.this,"Permission Denied",Toast.LENGTH_LONG).show(); 

      } 
     } 

     break; 
    } 
} 

public boolean checkPermission() { 


    int FirstPermissionResult= ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_FINE_LOCATION); 
    int SecondPermissionResult=ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.RECORD_AUDIO); 
    int ThirdPermissionResult=ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.CALL_PHONE); 
    int FourthPermissionResult=ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.CAMERA); 
    int FifthPermissionResult=ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.WRITE_EXTERNAL_STORAGE); 
    int SixthPermissionResult=ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.GET_ACCOUNTS); 
    int SeventhPermissionResult=ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.READ_CONTACTS); 

    return FirstPermissionResult == PackageManager.PERMISSION_GRANTED && 
      SecondPermissionResult == PackageManager.PERMISSION_GRANTED && 
      ThirdPermissionResult == PackageManager.PERMISSION_GRANTED && 
      FourthPermissionResult == PackageManager.PERMISSION_GRANTED && 
      FifthPermissionResult == PackageManager.PERMISSION_GRANTED && 
      SixthPermissionResult == PackageManager.PERMISSION_GRANTED && 
      SeventhPermissionResult == PackageManager.PERMISSION_GRANTED; 
}

来源

2016-11-10 Kalpit

从Android的源和文档在PackageManager

public static final int PERMISSION_DENIED = -1; 
public static final int PERMISSION_GRANTED = 0;

，并在您的代码，你加起来所有的权限许可的结果。因此，即使只有一个项目权限未被授予，您的result变量将变为-1，并且您的方法返回false;

您的代码的另一个问题是，您正在询问诸如VIBRATE之类的内容的权限，请阅读此doc以了解正常权限和危险权限之间的区别。

最后但也是最重要的问题，一次询问所有运行时权限不是由google推荐的。而且也有App Store将拒绝您的应用程序没有遵循权限的原则机会

编辑：删除列表这些权限，然后再试一次

Manifest.permission.MODIFY_AUDIO_SETTINGS 
Manifest.permission.CAPTURE_AUDIO_OUTPUT 
Manifest.permission.CAPTURE_VIDEO_OUTPUT 
Manifest.permission.CAPTURE_SECURE_VIDEO_OUTPUT 
Manifest.permission.ACCESS_NETWORK_STATE 
Manifest.permission.VIBRATE

请仔细阅读文档，它清楚地提到您不要求run time permissions为normal permissions

来源

2016-11-10 08:08:51

我正在授予所有权限，但每当我重新打开我的应用程序时，它仍会返回false。 – Kalpit

我添加了必须从列表中删除的权限列表。 –

https://inthecheesefactory.com/blog/things-you-need-to-know-about-android-m-permission-developer-edition/en也读过这个 –

当应用程序从背景中删除时，权限不见了

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