关于android生命周期

Question

我从这里的开发指南中读到了android活动的生命周期。现在我混淆了哪部分代码驻留在哪种方法中，比如onCreate、onStart、onResume、onRestart、onPause、onResume、onStop和OnDestroy。你能帮我把它们放在正确的地方吗。而且，即使应用程序最小化，跟踪也应该继续。我有以下代码。

public class MainActivity extends FragmentActivity implements  LocationListener {

//List of user defined variables

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    /*for now i  have kept everything in onCreate method
     * i have start and stop button to start the tracking and stop the tracking and show the distance of travel
    1. Checking whether GPS is on or OFF
    2. button = (ImageButton) findViewById(R.id.myButton);
    3. Code to load the Google map
    4. Now specified what start and stop button does.
        i. when i press start button it starts overlaying the path in the map and calculate distance travelled so far
        ii. when i press stop button it stops tracking and shows the details of final result in next activity.
    LocationManager manager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
            manager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 3000, 2, this);
    */

}

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

@Override
public void onLocationChanged(Location arg0) {
    // TODO Auto-generated method stub
    //i hace code for tracking and overlaying here

}

@Override
public void onProviderDisabled(String arg0) {
    // TODO Auto-generated method stub

}

@Override
public void onProviderEnabled(String arg0) {
    // TODO Auto-generated method stub

}

@Override
public void onStatusChanged(String arg0, int arg1, Bundle arg2) {
    // TODO Auto-generated method stub

}

}

Answer 1

基于我认为你想要的想法：“一个有开始记录和停止记录按钮的应用程序，同时使用谷歌地图显示路线。”正确？

您将需要两个组件：

服务（后台操作）

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