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我的Android應用程序不斷崩潰，但沒有任何錯誤。 繼承人的代碼。爲什麼我的Android應用崩潰？
LocationActivity.java 修訂
package com.marakana.tutomaps;
import android.app.TabActivity;
import android.content.Intent;
import android.content.res.Resources;
import android.os.Bundle;
import android.widget.TabHost;
public class LocationActivity extends TabActivity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Resources res = getResources(); // Resource object to get Drawables
TabHost tabHost = getTabHost(); // The activity TabHost
TabHost.TabSpec spec1, spec2, spec3; // Resusable TabSpec for each tab
Intent intent1, intent2, intent3; // Reusable Intent for each tab
// Create an Intent to launch an Activity for the tab (to be reused)
intent1 = new Intent().setClass(this, HaffActivity.class);
// Initialize a TabSpec for each tab and add it to the TabHost
spec1 = tabHost.newTabSpec("Haff").setIndicator("Haff",
res.getDrawable(R.drawable.ic_tab_haff))
.setContent(intent1);
tabHost.addTab(spec1);
// Do the same for the other tabs
intent2 = new Intent().setClass(this, MapsActivity.class);
spec2 = tabHost.newTabSpec("Maps").setIndicator("Maps",
res.getDrawable(R.drawable.ic_tab_maps))
.setContent(intent2);
tabHost.addTab(spec2);
intent3 = new Intent().setClass(this, ProfileActivity.class);
spec3 = tabHost.newTabSpec("Profile").setIndicator("Profile",
res.getDrawable(R.drawable.ic_tab_profile))
.setContent(intent3);
tabHost.addTab(spec3);
tabHost.setCurrentTab(2);
}
}
這裏是主要的佈局文件。 修訂 * main.xml中 *
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/tabhost" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout android:orientation="vertical"
android:layout_width="fill_parent" android:layout_height="fill_parent">
<View android:layout_width="fill_parent" android:layout_height="0.5dip"
android:background="#000" />
<TabWidget android:id="@android:id/tabs"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:layout_marginLeft="0dip" android:layout_marginRight="0dip" />
<View android:layout_width="fill_parent" android:layout_height="2dip"
android:background="#696969" />
<View android:layout_width="fill_parent" android:layout_height="2dip"
android:background="#000" />
<FrameLayout android:id="@android:id/tabcontent"
android:layout_width="fill_parent" android:layout_height="fill_parent" />
</LinearLayout>
</TabHost>
繼承人修訂
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.marakana.tutomaps"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="4" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".LocationActivity"
android:label="@string/app_name">
<intent-filter>
<uses-library android:name="com.google.android.maps" />
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".HaffActivity">
</activity>
<activity android:name=".MapsActivity">
</activity>
<activity android:name=".ProfileActivity">
</activity>
</application>
MapsActivity.java清單文件
package com.marakana.tutomaps;
import java.io.IOException;
import java.util.List;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;
public class MapsActivity extends MapActivity implements LocationListener {
private static final String TAG = "MapsActivity";
LocationManager locationManager;
Geocoder geocoder;
TextView locationText;
MapView map;
MapController mapController;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
locationText = (TextView)this.findViewById(R.id.lblLocationInfo);
map = (MapView)this.findViewById(R.id.mapview);
map.setBuiltInZoomControls(true);
mapController = map.getController();
mapController.setZoom(16);
locationManager = (LocationManager)this.getSystemService(LOCATION_SERVICE);
geocoder = new Geocoder(this);
Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null) {
Log.d(TAG, location.toString());
this.onLocationChanged(location);
}
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
locationManager.removeUpdates(this);
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 10, this);
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
@Override
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
Log.d(TAG, "onLocationChanged with location " + location.toString());
// Displays lat, long, altitude and bearing
String text = String.format("Lat:\t %f\nLong:\t %f\nAlt:\t %f\nBearing:\t %f", location.getLatitude(), location.getLongitude(), location.getAltitude(), location.getBearing());
this.locationText.setText(text);
try {
// This gets a list of addresses
List<Address> addresses = geocoder.getFromLocation(location.getLatitude(), location.getLongitude(), 10);
for (Address address : addresses) {
this.locationText.append("\n" + address.getAddressLine(0));
}
// Convert latitude and longitude into int that the GeoPoint constructor can understand
int latitude = (int)(location.getLatitude() * 1000000);
int longitude = (int)(location.getLongitude() * 1000000);
GeoPoint point = new GeoPoint(latitude,longitude);
mapController.animateTo(point);
} catch (IOException e) {
Log.e("LocateMe", "Could not get Geocoder data", e);
}
}
@Override
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
}
請幫助我。
把你的DDMS logcat放在這裏 –
當你的應用程序崩潰時發佈logcat ........ –
嘗試使用Debug配置（Eclipse）運行並在Logcat窗口（Debug透視圖）上看到。 – adatapost