Question

我的应用需要以下权限：

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

直到棒棒糖它工作正常但从Marshmallow开始，我需要在运行时请求许可。所以，我使用了这段代码：

if (ContextCompat.checkSelfPermission(getApplicationContext(),Manifest.permission.SYSTEM_ALERT_WINDOW)==PackageManager.PERMISSION_GRANTED){
    //my code here   
} else {
    if (shouldShowRequestPermissionRationale(Manifest.permission.SYSTEM_ALERT_WINDOW)) {
        Toast.makeText(getApplicationContext(),"Permission is requird",Toast.LENGTH_SHORT).show();
    }
    requestPermissions(new String[] {Manifest.permission.SYSTEM_ALERT_WINDOW},REQUEST_RESULT);
}


@Override
public void onRequestPermissionsResult(int requestCode,String[] permissions,int[] grantResult){
    if (requestCode==REQUEST_RESULT){
        if (grantResult[0]==PackageManager.PERMISSION_GRANTED){
            //my code here
        }else {
            Toast.makeText(getApplicationContext(),"permission has not granted",Toast.LENGTH_SHORT).show();
        }
    }
    else {
        super.onRequestPermissionsResult(requestCode,permissions,grantResult);
    }
}

当我尝试运行应用程序时，请求权限对话框不会出现，并显示一条消息“未授予权限”。为什么没有出现请求权限对话框？

这是我的build.gradle文件：

apply plugin: 'com.android.application'

android {
    compileSdkVersion 24
    buildToolsVersion "24.0.2"

    defaultConfig {
        applicationId "com.example.adarsh.ezswipe"
        minSdkVersion 19
        targetSdkVersion 24
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:24.2.1'
    compile 'com.android.support:support-v4:24.2.1'
}

Answer 1

KILL_BACKGROUND_PROCESSES不需要在运行时请求，因为protectionLevel不是dangerous。

通过此机制无法在运行时请求

SYSTEM_ALERT_WINDOW。请use canDrawOverlays()和ACTION_MANAGE_OVERLAY_PERMISSION。

Android Marshmallow中没有弹出请求权限对话框

1 个答案: