Question

我尝试检查权限在我的清单中我设置了

<uses-permission android:name="android.permission.READ_CONTACTS" />

然后在片段中我尝试检查

int permissionCheck = ContextCompat.checkSelfPermission(getActivity(),
            Manifest.permission.READ_CONTACTS);

但是，尽管操作系统中的应用程序属性具有任何权限，但我只获得0。我检查了Android 4.4.4 MIUI 6.5.1 可能是MIUI的原因

如果我尝试在Manifest中没有查看权限，我有-1，但我想知道权限的切换状态。

感谢名单

Answer 1

将此函数添加到您的代码中，并仅在MIUI中为READ_COntacts调用checkUsagePermission（）

private boolean checkUsagePermission() {
    if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
        AppOpsManager appOps = (AppOpsManager) getSystemService(Context.APP_OPS_SERVICE);
        int mode = 0;
        mode = appOps.checkOpNoThrow("android:read_contacts", android.os.Process.myUid(), getPackageName());
        boolean granted = mode == AppOpsManager.MODE_ALLOWED;
        if (!granted) {
           //write your code here for accept that permission 
            return false;
        }
    }
    return true;
}

Answer 2

0表示PackageManager.PERMISSION_GRANTED

Android 6中的Android版本为零，因为在安装应用之前已经提供了权限。如果您在运行Android 6或更高版本的手机中安装此应用程序，则它将返回-1，这意味着PackageManager.PERMISSION_DENIED，因为Android 6在安装应用程序之前不会要求权限，而是在运行时请求权限。

因此写这样的代码 -

if (ContextCompat.checkSelfPermission(context, Manifest.permission.READ_CONTACTS)
                == PackageManager.PERMISSION_DENIED)
            ActivityCompat.requestPermissions(this,
                    new String[]{Manifest.permission.READ_CONTACTS},
                    PERMISSION_REQUEST_CODE);

这样，只有在您没有权限的情况下，您的应用才会要求获得许可，并且只会在Android 6及更高版本上发生。在Android 6下面，您已经获得了许可。

编辑：似乎MIUI在Google在Android 6中引入它们之前提供了运行时权限。因此，您面临的问题是MIUI特有的。如果您在Android 6下使用MIUI以外的任何其他设备，则您将无法选择拒绝选择性权限。您要么提供所有权限，要么取消安装。所以你的应用程序将在所有其他设备上正常工作。

Answer 3

我刚刚使用MIUI 7 6.3.31 Beta测试MI 4W。

我正面临同样的checkSelfPermission返回true错误，就像我只请求Manifest.permission.READ_CONTACTS时那样。

即使我拒绝了Manifest.permission.WRITE_CONTACTS的请求，它也会将“拒绝”设置为Manifest.permission.READ_CONTACTS。检查这两个权限将返回true。

虽然我已经拒绝，但checkSelfPermission（Manifest.permission.READ_CONTACTS）返回true，偶尔MIUI会弹出一条消息，通知用户对CONTACTS的访问被拒绝。

以下是我的实际权限： checkSelfPermission（Manifest.permission.READ_CONTACTS）

PermissionUtil：

public static boolean hasSelfPermission(Context context, String permission) {
    // Below Android M all permissions are granted at install time and are already available.
    if (!isMNC()) {
        return true;
    }
        return context.checkSelfPermission(permission) == PackageManager.PERMISSION_GRANTED;
    }

    public static boolean isMNC() {
        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.M;
    }

测试代码：

Log.d(TAG, "READ_CONTACTS: " + PermissionUtil.hasSelfPermission(TestActivity.this, Manifest.permission.READ_CONTACTS));
Log.d(TAG, "WRITE_CONTACTS: " + PermissionUtil.hasSelfPermission(TestActivity.this, Manifest.permission.WRITE_CONTACTS));
Log.d(TAG, "ACCESS_FINE_LOCATION: " + PermissionUtil.hasSelfPermission(TestActivity.this, Manifest.permission.ACCESS_FINE_LOCATION));
Log.d(TAG, "ACCESS_COARSE_LOCATION: " + PermissionUtil.hasSelfPermission(TestActivity.this, Manifest.permission.ACCESS_COARSE_LOCATION));
Log.d(TAG, "CAMERA: " + PermissionUtil.hasSelfPermission(TestActivity.this, Manifest.permission.CAMERA));
Log.d(TAG, "RECORD_AUDIO: " + PermissionUtil.hasSelfPermission(TestActivity.this, Manifest.permission.RECORD_AUDIO));
Log.d(TAG, "READ_EXTERNAL_STORAGE: " + PermissionUtil.hasSelfPermission(TestActivity.this, Manifest.permission.READ_EXTERNAL_STORAGE));
Log.d(TAG, "WRITE_EXTERNAL_STORAGE: " + PermissionUtil.hasSelfPermission(TestActivity.this, Manifest.permission.WRITE_EXTERNAL_STORAGE));

“应用设置”中拒绝了所有权限。

结果：

04-01 13:16:54.967 25481-25481/com.test.test D/TestActivity: READ_CONTACTS: true
04-01 13:16:54.967 25481-25481/com.test.test D/TestActivity: WRITE_CONTACTS: true
04-01 13:16:54.967 25481-25481/com.test.test D/TestActivity: ACCESS_FINE_LOCATION: false
04-01 13:16:54.968 25481-25481/com.test.test D/TestActivity: ACCESS_COARSE_LOCATION: false
04-01 13:16:54.968 25481-25481/com.test.test D/TestActivity: CAMERA: false
04-01 13:16:54.969 25481-25481/com.test.test D/TestActivity: RECORD_AUDIO: false
04-01 13:16:54.969 25481-25481/com.test.test D/TestActivity: READ_EXTERNAL_STORAGE: false
04-01 13:16:54.970 25481-25481/com.test.test D/TestActivity: WRITE_EXTERNAL_STORAGE: false

我在Nexus 5上进行了测试并拒绝了所有权限。

结果：

04-01 13:16:54.967 25481-25481/com.test.test D/TestActivity: READ_CONTACTS: false
04-01 13:16:54.967 25481-25481/com.test.test D/TestActivity: WRITE_CONTACTS: false
04-01 13:16:54.967 25481-25481/com.test.test D/TestActivity: ACCESS_FINE_LOCATION: false
04-01 13:16:54.968 25481-25481/com.test.test D/TestActivity: ACCESS_COARSE_LOCATION: false
04-01 13:16:54.968 25481-25481/com.test.test D/TestActivity: CAMERA: false
04-01 13:16:54.969 25481-25481/com.test.test D/TestActivity: RECORD_AUDIO: false
04-01 13:16:54.969 25481-25481/com.test.test D/TestActivity: READ_EXTERNAL_STORAGE: false
04-01 13:16:54.970 25481-25481/com.test.test D/TestActivity: WRITE_EXTERNAL_STORAGE: false

结束这是MIUI 7 6.3.31 Beta的错误。

Answer 4

检查：
https://developer.android.com/reference/android/content/pm/PackageManager.html#PERMISSION_GRANTED

0代表PERMISSION_GRANTED

我在 Github 上创建了一个示例应用，以演示权限模型。

检查版本

/**
* Check build version
*/
if(Build.VERSION.SDK_INT < 23){
    displayContacts();
}else {
    requestContactPermission();
}

检查权限

private void requestContactPermission() {

    int hasContactPermission = ActivityCompat.checkSelfPermission(MainActivity.this,Manifest.permission.READ_CONTACTS);

    if(hasContactPermission != PackageManager.PERMISSION_GRANTED ) {
        ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.READ_CONTACTS}, READ_CONTACT_REQUEST_CODE);
    }else {
        Toast.makeText(MainActivity.this, "Contact Permission is already granted", Toast.LENGTH_LONG).show();
        displayContacts();
    }
}

此处，READ_CONTACT_REQUEST_CODE是任何整数值

处理许可

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

    switch (requestCode){
        case READ_CONTACT_REQUEST_CODE:

            // Check if the only required permission has been granted
            if (grantResults.length == 1 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                // Camera permission has been granted, preview can be displayed
                Log.i("Permission", "Contact permission has now been granted. Showing result.");
                Toast.makeText(MainActivity.this,"Contact Permission is Granted",Toast.LENGTH_SHORT).show();

                displayContacts();

            } else {
                Log.i("Permission", "Contact permission was NOT granted.");
                Toast.makeText(MainActivity.this,"Permission is not Granted",Toast.LENGTH_SHORT).show();
            }

            break;
    }
}

检查MIUI中的权限READ_CONTACTS

4 个答案:

检查版本

检查权限

处理许可