询问倍数权限 android 6.0

Question

我必须显示多个权限，我的程序只显示第一个我不知道为什么，我希望你能帮助我

进口

import static android.Manifest.permission.CHANGE_CONFIGURATION;
import static android.Manifest.permission.MODIFY_AUDIO_SETTINGS;
import static android.Manifest.permission.WRITE_EXTERNAL_STORAGE; 
import static android.Manifest.permission.WRITE_SETTINGS;

主要

if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
    Permis();
}

函数权限

private void Permis() {

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        if ((checkSelfPermission(WRITE_EXTERNAL_STORAGE) ==  PackageManager.PERMISSION_GRANTED) &&
            (checkSelfPermission(CHANGE_CONFIGURATION) ==  PackageManager.PERMISSION_GRANTED) &&
            (checkSelfPermission(MODIFY_AUDIO_SETTINGS) ==  PackageManager.PERMISSION_GRANTED) &&
            (checkSelfPermission(WRITE_SETTINGS) ==  PackageManager.PERMISSION_GRANTED)) {

            Toast.makeText(tuneActivity.this, "Permiso concedido  anteriormente", Toast.LENGTH_SHORT).show();
        }

        if ((shouldShowRequestPermissionRationale(WRITE_EXTERNAL_STORAGE))||
            (shouldShowRequestPermissionRationale(CHANGE_CONFIGURATION)) || 
            (shouldShowRequestPermissionRationale(MODIFY_AUDIO_SETTINGS)) || 
            (shouldShowRequestPermissionRationale(WRITE_SETTINGS))) {

            DialogoAlerta();

        } else {
            requestPermissions(new String[]{WRITE_EXTERNAL_STORAGE,  CHANGE_CONFIGURATION, MODIFY_AUDIO_SETTINGS, WRITE_SETTINGS},
                        MY_PERMISSIONS_REQUEST);
        }
    }
}

函数 DialogAlerta

private void DialogoAlerta() {

        AlertDialog.Builder dialogo=new AlertDialog.Builder(tuneActivity.this);
        dialogo.setTitle("Permisos desactivados");
        dialogo.setMessage("Debe aceptar los permisos para poder definir un  tono como ringtone o sonido de notificacion");
        dialogo.setPositiveButton("Aceptar", new  DialogInterface.OnClickListener() {

            @Override
            public void onClick(DialogInterface dialogInterface, int i) {

                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                    requestPermissions(new String[]{WRITE_EXTERNAL_STORAGE,  CHANGE_CONFIGURATION, MODIFY_AUDIO_SETTINGS, WRITE_SETTINGS},
                            MY_PERMISSIONS_REQUEST);
                }
            }

        });
    }

onRequestPermissionsResult

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[], @NonNull int[] grantResults) {
            super.onRequestPermissionsResult(requestCode,permissions,grantResults);
    switch (requestCode) {
        case MY_PERMISSIONS_REQUEST: {
                // If request is cancelled, the result arrays are empty.
            if (grantResults.length > 0 && grantResults[0] ==
                 PackageManager.PERMISSION_GRANTED && grantResults[1] ==
                 PackageManager.PERMISSION_GRANTED && grantResults[2] ==
                 PackageManager.PERMISSION_GRANTED && grantResults[3] ==
                 PackageManager.PERMISSION_GRANTED ) { 
                    Toast.makeText (tuneActivity.this,"Permiso concedido",Toast.LENGTH_SHORT).show();
            } else {
                Toast.makeText (tuneActivity.this,"Permiso no concedido",Toast.LENGTH_SHORT).show();
            }
        return;
    }
}

}

所以..程序只要求第一个权限'写入外部存储'然后它显示'permiso no concedido'但我不知道为什么，我希望你能解释我为什么，谢谢并为我的错误道歉英语

Answer 1

只有保护级别为dangerous的权限才需要权限请求。您可以参考此 document to determine the protection level. Refer this permission overview document 了解更多详情。

`MODIFY_AUDIO_SETTINGS`

您没有看到对此的权限请求，因为此权限的保护级别为 normal。此权限将自动授予，无需向用户请求。

`WRITE_SETTINGS`

您没有看到权限请求，因为保护级别为 signature。基于 documentation:

Note: If the app targets API level 23 or higher, the app user must explicitly grant this permission to the app through a permission management screen. The app requests the user's approval by sending an intent with action ACTION_MANAGE_WRITE_SETTINGS. The app can check whether it has this authorization by calling Settings.System.canWrite().

您需要触发 intent 才能请求此权限。

`CHANGE_CONFIGURATION`

此权限要求应用程序由固件签名密钥签名或安装在系统分区上。所以你不能通过权限对话框请求这个权限。参考这个 SO

不过，有一种解决方法可以通过 adb 授予此权限，如下所示：

adb -d shell pm grant <your package name> android.permission.CHANGE_CONFIGURATION

但您不能指望所有用户都具备执行此操作的技术知识。

Answer 2

就像@Sagar 所说的，我必须请求的唯一许可是"WRITE_EXTERNAL_STORAGE"，因为"MODIFY_AUDIO_SETTINGS" 只是被认为是android 的"normal"。但是回到我的问题，我找到的一个解决方案是：

"WRITE_EXTERNAL_STORAGE" 只是像我一样问它，为了得到 WRITE_SETTINGS 我做了那个代码：

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        retVal = Settings.System.canWrite(this);
if(retVal){  
            Toast.makeText(this, "All good", Toast.LENGTH_LONG).show();
        }else{
            Intent intent = new Intent(android.provider.Settings.ACTION_MANAGE_WRITE_SETTINGS);
                        startActivity(intent); // we open the part of the system configuration in which the person have to just enable our app ;)
        }

询问倍数权限 android 6.0

Ask multiples permissions android 6.0

java

permissions

android

android-permissions

android-studio

`MODIFY_AUDIO_SETTINGS`

`WRITE_SETTINGS`

`CHANGE_CONFIGURATION`