谁能告诉我有什么问题？该应用程序总是在设备 SE xperia X10 上崩溃。也许这就是我嵌入 ADMOB 的方式。它甚至没有显示一秒钟。请问有什么线索吗？XML 和清单中的一切似乎都很好。谢谢
package com.taiic.template.admob;
import com.google.ads.AdRequest;
import com.google.ads.AdView;
import java.io.IOException;
import java.util.*;
import android.widget.*;
import android.view.View;
import android.view.View.OnClickListener;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Bundle;
import android.location.*;
import android.content.*;
import android.app.Activity;
import android.os.Bundle;
public class adMain extends Activity {
Button addressButton;
TextView locationText;
TextView addressText;
Location currentLocation;
double currentLatitude;
double currentLongitude;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
addressText = (TextView)findViewById(R.id.addressText);
locationText = (TextView)findViewById(R.id.locationText);
addressButton = (Button)findViewById(R.id.addressButton);
this.addressText.setText("ready");
LocationManager locationManager =
(LocationManager)this.getSystemService(Context.LOCATION_SERVICE);
LocationListener locationListener = new LocationListener() {
public void onLocationChanged(Location location) {
updateLocation(location);
}
public void onStatusChanged(
String provider, int status, Bundle extras) {}
public void onProviderEnabled(String provider) {}
public void onProviderDisabled(String provider) {}
};
locationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER, 0, 0, locationListener);
this.addressButton.setOnClickListener(new OnClickListener() {
public void onClick(View v){
getAddress();
}
});
}
void getAddress(){
try{
Geocoder gcd = new Geocoder(this, Locale.getDefault());
List<Address> addresses =
gcd.getFromLocation(currentLatitude, currentLongitude,100);
if (addresses.size() > 0) {
StringBuilder result = new StringBuilder();
for(int i = 0; i < addresses.size(); i++){
Address address = addresses.get(i);
int maxIndex = address.getMaxAddressLineIndex();
for (int x = 0; x <= maxIndex; x++ ){
result.append(address.getAddressLine(x));
result.append(",");
}
result.append(address.getLocality());
result.append(",");
result.append(address.getPostalCode());
result.append("\n\n");
}
addressText.setText(result.toString());
}
}
catch(IOException ex){
addressText.setText(ex.getMessage().toString());
}
}
void updateLocation(Location location){
currentLocation = location;
currentLatitude = currentLocation.getLatitude();
currentLongitude = currentLocation.getLongitude();
locationText.setText(currentLatitude + ", " + currentLongitude);
}
AdView layout = (AdView)this.findViewById(R.id.adView);
AdRequest adRequest = new AdRequest();
adRequest.setTesting(true);
layout.loadAd(adRequest);
}
这是目录
07-13 00:10:59.451: D/AndroidRuntime(3735): Shutting down VM
07-13 00:10:59.451: W/dalvikvm(3735): threadid=1: thread exiting with uncaught exception (group=0x4001d560)
07-13 00:10:59.461: E/AndroidRuntime(3735): FATAL EXCEPTION: main
07-13 00:10:59.461: E/AndroidRuntime(3735): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.taiic.template.admob/com.taiic.template.admob.adMain}: java.lang.NullPointerException
07-13 00:10:59.461: E/AndroidRuntime(3735): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1581)
07-13 00:10:59.461: E/AndroidRuntime(3735): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1675)
07-13 00:10:59.461: E/AndroidRuntime(3735): at android.app.ActivityThread.access$1500(ActivityThread.java:121)
07-13 00:10:59.461: E/AndroidRuntime(3735): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:943)
07-13 00:10:59.461: E/AndroidRuntime(3735): at android.os.Handler.dispatchMessage(Handler.java:99)
07-13 00:10:59.461: E/AndroidRuntime(3735): at android.os.Looper.loop(Looper.java:123)
07-13 00:10:59.461: E/AndroidRuntime(3735): at android.app.ActivityThread.main(ActivityThread.java:3701)
07-13 00:10:59.461: E/AndroidRuntime(3735): at java.lang.reflect.Method.invokeNative(Native Method)
07-13 00:10:59.461: E/AndroidRuntime(3735): at java.lang.reflect.Method.invoke(Method.java:507)
07-13 00:10:59.461: E/AndroidRuntime(3735): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:862)
07-13 00:10:59.461: E/AndroidRuntime(3735): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:620)
07-13 00:10:59.461: E/AndroidRuntime(3735): at dalvik.system.NativeStart.main(Native Method)
07-13 00:10:59.461: E/AndroidRuntime(3735): Caused by: java.lang.NullPointerException
07-13 00:10:59.461: E/AndroidRuntime(3735): at android.app.Activity.findViewById(Activity.java:1647)
07-13 00:10:59.461: E/AndroidRuntime(3735): at com.taiic.template.admob.adMain.<init>(adMain.java:102)
07-13 00:10:59.461: E/AndroidRuntime(3735): at java.lang.Class.newInstanceImpl(Native Method)
07-13 00:10:59.461: E/AndroidRuntime(3735): at java.lang.Class.newInstance(Class.java:1409)
07-13 00:10:59.461: E/AndroidRuntime(3735): at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
07-13 00:10:59.461: E/AndroidRuntime(3735): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1573)
07-13 00:10:59.461: E/AndroidRuntime(3735): ... 11 more