1

MainActivity 代码是：

    package com.example.testing;

import android.os.Bundle;
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.view.Menu;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
    public class Boot extends BroadcastReceiver{

        /*@Override
        public void onReceive(Context context, Intent intent) {
                Intent i = new Intent(context, MainActivity.class);
                i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                i.addFlags(Intent.FLAG_FROM_BACKGROUND);
                context.startActivity(i);  
        }*/
        @Override
        public void onReceive(Context context, Intent intent) {
            // make sure you receive "BOOT_COMPLETED"
            if ((intent.getAction() != null) && (intent.getAction().equals("android.intent.action.BOOT_COMPLETED")))
            {
                // Start the service or activity 
                Intent i = new Intent(context, MainActivity.class);
                i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                i.addFlags(Intent.FLAG_FROM_BACKGROUND);
                i.addFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT);
                try {
                    Thread.sleep(120000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                context.startActivity(i); 
            }
        }

   }
}

显现：

    <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.testing"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.testing.second"
            android:label="second" >
        </activity>
        <activity
            android:name="com.example.testing.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <receiver android:enabled="true" android:name=".Boot" android:permission="android.permission.RECEIVE_BOOT_COMPLETED">
        <intent-filter>
                <action android:name="android.intent.action.BOOT_COMPLETED" />
                <category android:name="android.intent.category.DEFAULT" />
        </intent-filter>
        </receiver>
    </application>

</manifest>

在模拟器中，应用程序启动（4.0.3 ICS 的模拟器），但在我的 ICS 4.0.4 SonyEricsson 上它崩溃了，它也用三星 Galaxy 2.2 Froyo Android 测试了这个问题，但同样的问题请帮忙。

我添加了线程睡眠，因为应用程序在手机启动时崩溃了，所以我认为这是由于设备上的资源过载而发生的，这被认为是无用的！

我认为这是定义问题的 LOGCAT 的摘录

I/ActivityManager(  274): Start proc com.yahoo.mobile.client.android.mail for broadcast com.yahoo.mobile.client.android.mail/com.yahoo.mobile.client.share.update.SoftwareUpdateSystemBroadcastReceiver: pid=805 uid=10014 gids={3003, 1007, 1015}
D/PhoneStatusBar(  359): disable: < expand icons alerts ticker system_info BACK HOME recent* CLOCK >
D/PhoneStatusBar(  359): disable: < expand icons alerts ticker system_info back* home* recent clock* >
I/ActivityManager(  274): Start proc com.example.testing for broadcast com.example.testing/.Boot: pid=824 uid=10153 gids={}
E/AndroidRuntime(  824): FATAL EXCEPTION: main
E/AndroidRuntime(  824): java.lang.RuntimeException: Unable to instantiate receiver com.example.testing.Boot: java.lang.ClassNotFoundException: com.example.testing.Boot
E/AndroidRuntime(  824):    at android.app.ActivityThread.handleReceiver(ActivityThread.java:2111)
E/AndroidRuntime(  824):    at android.app.ActivityThread.access$1500(ActivityThread.java:127)
E/AndroidRuntime(  824):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1208)
E/AndroidRuntime(  824):    at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime(  824):    at android.os.Looper.loop(Looper.java:137)
E/AndroidRuntime(  824):    at android.app.ActivityThread.main(ActivityThread.java:4441)
E/AndroidRuntime(  824):    at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime(  824):    at java.lang.reflect.Method.invoke(Method.java:511)
E/AndroidRuntime(  824):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
E/AndroidRuntime(  824):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
E/AndroidRuntime(  824):    at dalvik.system.NativeStart.main(Native Method)
E/AndroidRuntime(  824): Caused by: java.lang.ClassNotFoundException: com.example.testing.Boot
E/AndroidRuntime(  824):    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
E/AndroidRuntime(  824):    at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
E/AndroidRuntime(  824):    at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
E/AndroidRuntime(  824):    at android.app.ActivityThread.handleReceiver(ActivityThread.java:2106)
E/AndroidRuntime(  824):    ... 10 more
I/BootReceiver(  274): Copying /proc/last_kmsg to DropBox (SYSTEM_LAST_KMSG)
4

1 回答 1

2

logcat 有点解释你的问题......com.example.testing.Boot不存在......这是正确的，因为Boot它的内部类也是MainActivity如此，所以它至少应该是com.example.testing.MainActivity.Boot。

但是，我认为不允许将内部类作为接收者，因为系统不知道应该调用哪个“外部类”？com.example.testing所以把它放在包里自己的文件里。

于 2013-03-06T09:21:21.200 回答