權限對話框未顯示android棉花糖

Question

我正在使用nexus 6 android 6.0，僅針對WRITE_EXTERNAL_STORAGE權限對話框未顯示其他危險權限。

final private int REQUEST_CODE_ASK_PERMISSIONS = 123;

@TargetApi(Build.VERSION_CODES.M)
private void insertDummyContactWrapper() {
    int hasWriteContactsPermission = checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE);

    // Here, thisActivity is the current activity
    if (hasWriteContactsPermission != PackageManager.PERMISSION_GRANTED) {

        // Should we show an explanation?
        if (ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this,
                Manifest.permission.WRITE_EXTERNAL_STORAGE)) {

            // Show an expanation to the user *asynchronously* -- don't block
            // this thread waiting for the user's response! After the user
            // sees the explanation, try again to request the permission.

        } else {

            // No explanation needed, we can request the permission.

            ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
                    110);

            // MY_PERMISSIONS_REQUEST_READ_CONTACTS is an
            // app-defined int constant. The callback method gets the
            // result of the request.
        }
    }
}

建立：

defaultConfig {
        applicationId "com.example.application"
        minSdkVersion 16
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
    }

表現：

uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"
uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"

Answer 1

僅針對WRITE_EXTERNAL_STORAGE權限對話框未顯示其他危險權限

您的其他dangerous許可是READ_EXTERNAL_STORAGE 。 在我們請求權限並檢查權限的同時，在Android 6.0 UI中，用戶會授予（或拒絕）權限組 。 READ_EXTERNAL_STORAGE和WRITE_EXTERNAL_STORAGE在同一組中。

因此，如果用戶先前已授予您對READ_EXTERNAL_STORAGE的請求，則在您調用checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE);時間點您已經擁有WRITE_EXTERNAL_STORAGE checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE); 。