java - 即使对 SET_ALARM 使用 <uses-permission> 也会获得权限拒绝？

Question

我对 Android Studio 和 Android 编程还很陌生。我刚刚阅读了第一个常见的 Intent 教程，它是关于 AlarmClock 的。我尝试编写一个简单的代码来测试该 Intent，但它无法处理抛出的 SecurityException，堆栈跟踪如下所示:

05-20 15:36:25.010 2342-2342/com.viphalong.helloandroid E/AndroidRuntime: FATAL EXCEPTION: main Process: com.viphalong.helloandroid, PID: 2342 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.viphalong.helloandroid/com.viphalong.helloandroid.MainActivity}: java.lang.SecurityException: Permission Denial: starting Intent { act=android.intent.action.SET_ALARM cmp=com.android.deskclock/.HandleApiCalls (has extras) } from ProcessRecord{ad271560 2342:com.viphalong.helloandroid/u0a52} (pid=2342, uid=10052) requires com.android.alarm.permission.SET_ALARM at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2184) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233) at android.app.ActivityThread.access$800(ActivityThread.java:135) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:136) at android.app.ActivityThread.main(ActivityThread.java:5001) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601) at dalvik.system.NativeStart.main(Native Method) Caused by: java.lang.SecurityException: Permission Denial: starting Intent { act=android.intent.action.SET_ALARM cmp=com.android.deskclock/.HandleApiCalls (has extras) } from ProcessRecord{ad271560 2342:com.viphalong.helloandroid/u0a52} (pid=2342, uid=10052) requires com.android.alarm.permission.SET_ALARM at android.os.Parcel.readException(Parcel.java:1465) at android.os.Parcel.readException(Parcel.java:1419) at android.app.ActivityManagerProxy.startActivity(ActivityManagerNative.java:2096) at android.app.Instrumentation.execStartActivity(Instrumentation.java:1419) at android.app.Activity.startActivityForResult(Activity.java:3424) at android.app.Activity.startActivityForResult(Activity.java:3385) at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:842) at android.app.Activity.startActivity(Activity.java:3627) at android.app.Activity.startActivity(Activity.java:3595) at com.viphalong.helloandroid.MainActivity.createAlarm(MainActivity.java:22) at com.viphalong.helloandroid.MainActivity.onCreate(MainActivity.java:14) at android.app.Activity.performCreate(Activity.java:5231) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2148) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)  at android.app.ActivityThread.access$800(ActivityThread.java:135)  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)  at android.os.Handler.dispatchMessage(Handler.java:102)  at android.os.Looper.loop(Looper.java:136)  at android.app.ActivityThread.main(ActivityThread.java:5001)  at java.lang.reflect.Method.invokeNative(Native Method)  at java.lang.reflect.Method.invoke(Method.java:515)  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)  at dalvik.system.NativeStart.main(Native Method) 

这是 list 文件:

<?xml version="1.0" encoding="utf-8"?>
  <manifest xmlns:android="http://schemas.android.com/apk/res/android"
            package="com.viphalong.helloandroid">
    <uses-permission android:name="com.android.alarm.permission.SET_ALARM"/>
    <application
      android:allowBackup="true"
      android:icon="@mipmap/ic_launcher"
      android:label="@string/app_name"
      android:supportsRtl="true"
      android:theme="@style/AppTheme">
      <activity android:name=".MainActivity">
         <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
          </intent-filter>

      </activity>
    </application>

   </manifest>

这里是主要代码:

package com.viphalong.helloandroid;

import android.content.Intent;
import android.provider.AlarmClock;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //try creating a simple alarming
        createAlarm("Welldone", 0, 1);
    }
    void createAlarm(String msg, int hours, int minutes){
        Intent it = new Intent(AlarmClock.ACTION_SET_ALARM);
        it.putExtra(AlarmClock.EXTRA_MESSAGE, msg)
          .putExtra(AlarmClock.EXTRA_HOUR, hours)
          .putExtra(AlarmClock.EXTRA_MINUTES, minutes);
        if(it.resolveActivity(getPackageManager()) != null){
          startActivity(it);
        }
    }
}

如你所见，我放了一行

<uses-permission android:name="com.android.alarm.permission.SET_ALARM"/>

在 list 文件中。但是异常仍然抛出让我真的很困惑。

Answer 1

尝试添加这两种权限。。

<uses-permission android:name="android.permission.SET_ALARM"/> <uses-permission android:name="com.android.alarm.permission.SET_ALARM" />

我遇到过类似的问题...通过添加两个权限解决了...