Android 堆栈中有多个MapActivity

我知道这个主题已经讨论过好几次了，对于“多个”MapActivity类，建议的解决方案通常是在不同的进程中运行一个。我不想这么做，我有三个

相反，我重构了一个MapActivity子类，以在3种不同模式下运行

package com.rossgreenhalf.maptest.activity;

import android.os.Bundle;

import com.google.android.maps.MapActivity;

public class MyMapActivity extends MapActivity {

    @Override
    protected void onCreate(Bundle icicle) {
    super.onCreate(icicle);

    /* Inflate xml view, Set Zoom etc */
    }

    @Override
    protected void onResume() {
        super.onResume();

        int mode = getIntent().getExtras().getInt("MAP_MODE");

        switch(mode){
        case 1:
            /* Some markers to show */
            break;
        case 2:
            /* Just one Marker */
            break;
        case 3: 
            /* Only showing my location */
            break;
        }
    }

    @Override
    protected boolean isRouteDisplayed() {
    return false;
    }
}

我允许MapActivity的多个实例驻留在任务堆栈中，因为它的启动模式仍然设置为“标准”。这种方法似乎工作正常，我并没有收到一些人似乎收到的连接池关闭消息，我有点困惑，到底是多个MapActivity实例确实存在，还是android正在自动重用一个

然而，我得到了这个错误，我不知道它有多严重：

01-25 10:14:54.433: ERROR/ActivityThread(5620): Activity com.rossgreenhalf.maptest.activity.MyMapActivity has leaked IntentReceiver com.google.android.maps.NetworkConnectivityListener$ConnectivityBroadcastReceiver@44981cf0 that was originally registered here. Are you missing a call to unregisterReceiver()?
01-25 10:14:54.433: ERROR/ActivityThread(5620): android.app.IntentReceiverLeaked: Activity com.rossgreenhalf.maptest.activity.MyMapActivity has leaked IntentReceiver com.google.android.maps.NetworkConnectivityListener$ConnectivityBroadcastReceiver@44981cf0 that was originally registered here. Are you missing a call to unregisterReceiver()?
01-25 10:14:54.433: ERROR/ActivityThread(5620):     at android.app.ActivityThread$PackageInfo$ReceiverDispatcher.(ActivityThread.java:968)
01-25 10:14:54.433: ERROR/ActivityThread(5620):     at android.app.ActivityThread$PackageInfo.getReceiverDispatcher(ActivityThread.java:753)
01-25 10:14:54.433: ERROR/ActivityThread(5620):     at android.app.ContextImpl.registerReceiverInternal(ContextImpl.java:799)
01-25 10:14:54.433: ERROR/ActivityThread(5620):     at android.app.ContextImpl.registerReceiver(ContextImpl.java:786)
01-25 10:14:54.433: ERROR/ActivityThread(5620):     at android.app.ContextImpl.registerReceiver(ContextImpl.java:780)
01-25 10:14:54.433: ERROR/ActivityThread(5620):     at android.content.ContextWrapper.registerReceiver(ContextWrapper.java:318)
01-25 10:14:54.433: ERROR/ActivityThread(5620):     at com.google.android.maps.NetworkConnectivityListener.startListening(MapActivity.java:163)
01-25 10:14:54.433: ERROR/ActivityThread(5620):     at com.google.android.maps.MapActivity.onResume(MapActivity.java:431)
01-25 10:14:54.433: ERROR/ActivityThread(5620):     at com.rossgreenhalf.maptest.activity.MyMapActivity.onResume(MyMapActivity.java:166)
01-25 10:14:54.433: ERROR/ActivityThread(5620):     at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1237)
01-25 10:14:54.433: ERROR/ActivityThread(5620):     at android.app.Activity.performResume(Activity.java:3864)
01-25 10:14:54.433: ERROR/ActivityThread(5620):     at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3315)
01-25 10:14:54.433: ERROR/ActivityThread(5620):     at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3340)
01-25 10:14:54.433: ERROR/ActivityThread(5620):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2158)
01-25 10:14:54.433: ERROR/ActivityThread(5620):     at android.os.Handler.dispatchMessage(Handler.java:99)
01-25 10:14:54.433: ERROR/ActivityThread(5620):     at android.os.Looper.loop(Looper.java:143)
01-25 10:14:54.433: ERROR/ActivityThread(5620):     at android.app.ActivityThread.main(ActivityThread.java:4914)
01-25 10:14:54.433: ERROR/ActivityThread(5620):     at java.lang.reflect.Method.invokeNative(Native Method)
01-25 10:14:54.433: ERROR/ActivityThread(5620):     at java.lang.reflect.Method.invoke(Method.java:521)
01-25 10:14:54.433: ERROR/ActivityThread(5620):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)
01-25 10:14:54.433: ERROR/ActivityThread(5620):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
01-25 10:14:54.433: ERROR/ActivityThread(5620):     at dalvik.system.NativeStart.main(Native Method)

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我是否采取了正确的方法？我应该担心这个错误吗？

我遇到了同样的问题，在搜索之后，我发现了这篇关于同样问题的帖子

这表明在应用程序中使用多个

映射活动时，问题会出现

因此，在我的应用程序的manifest.xml文件中，我让每个映射活动在一个单独的进程中运行：

android:process=":p1"
android:process=":p2"

你可以在Android文档中阅读更多关于这方面的内容
 此错误只是告诉您，在活动关闭后，某些接收器已注册而未注销的内容。这可能会导致应用程序内存泄漏。我理解错误，只是不知道它的真正影响。影响是应用程序中的潜在内存泄漏。@Olegas如何防止此错误？@IgorG解决方案很简单。。。根据需要，您需要在onPause/onStop/onDestroy事件中注销接收器。