3
我理解这个主题已经被覆盖了几次，并且通常提出的具有“多个”MapActivity类的解决方案是在不同的进程中运行一个。我不想这样做，我有3个。堆栈中的多个MapActivitys
我改为将一个MapActivity子类重构为3种不同的模式。
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;
}
}
我允许多个MapActivity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，我没有得到一些似乎得到的连接池关闭消息，对于是否存在多个MapActivity实例或者Android是否自动重用一个实例，我有点困惑。
不过，我得到这个错误，我不知道这是多么严重：
01-25 10:14:54.433: ERROR/ActivityThread(5620): Activity com.rossgreenhalf.maptest.activity.MyMapActivity has leaked IntentReceiver com.google.android[email protected]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[email protected]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)
我是否采取正确的方法呢？我应该关心这个错误吗？
这个错误只是告诉你，一些Receiver被注册，并且在活动关闭后没有被注销。这可能会导致应用程序中的内存泄漏。 – Olegas 2011-01-25 11:25:33