アプリケーションを ma Galaxy S2 で実行したいのですが、このエラーが見つかりました。logcat を投稿します。何が問題なのか教えてください。そしてそれを解決する方法は？ありがとう
05-07 11:23:38.820: D/AndroidRuntime(8900): Shutting down VM
05-07 11:23:38.820: W/dalvikvm(8900): threadid=1: thread exiting with uncaught exception (group=0x40c3f1f8)
05-07 11:23:38.820: E/AndroidRuntime(8900): FATAL EXCEPTION: main
05-07 11:23:38.820: E/AndroidRuntime(8900): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.aaaaa/com.example.aaaaa.MainActivity}: java.lang.NullPointerException
05-07 11:23:38.820: E/AndroidRuntime(8900): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1892)
05-07 11:23:38.820: E/AndroidRuntime(8900): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1993)
05-07 11:23:38.820: E/AndroidRuntime(8900): at android.app.ActivityThread.access$600(ActivityThread.java:127)
05-07 11:23:38.820: E/AndroidRuntime(8900): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1159)
05-07 11:23:38.820: E/AndroidRuntime(8900): at android.os.Handler.dispatchMessage(Handler.java:99)
05-07 11:23:38.820: E/AndroidRuntime(8900): at android.os.Looper.loop(Looper.java:137)
05-07 11:23:38.820: E/AndroidRuntime(8900): at android.app.ActivityThread.main(ActivityThread.java:4507)
05-07 11:23:38.820: E/AndroidRuntime(8900): at java.lang.reflect.Method.invokeNative(Native Method)
05-07 11:23:38.820: E/AndroidRuntime(8900): at java.lang.reflect.Method.invoke(Method.java:511)
05-07 11:23:38.820: E/AndroidRuntime(8900): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790)
05-07 11:23:38.820: E/AndroidRuntime(8900): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557)
05-07 11:23:38.820: E/AndroidRuntime(8900): at dalvik.system.NativeStart.main(Native Method)
05-07 11:23:38.820: E/AndroidRuntime(8900): Caused by: java.lang.NullPointerException
05-07 11:23:38.820: E/AndroidRuntime(8900): at android.content.ContextWrapper.getResources(ContextWrapper.java:81)
05-07 11:23:38.820: E/AndroidRuntime(8900): at android.view.View.<init>(View.java:2721)
05-07 11:23:38.820: E/AndroidRuntime(8900): at android.view.View.<init>(View.java:2769)
05-07 11:23:38.820: E/AndroidRuntime(8900): at android.widget.TextView.<init>(TextView.java:573)
05-07 11:23:38.820: E/AndroidRuntime(8900): at android.widget.TextView.<init>(TextView.java:566)
05-07 11:23:38.820: E/AndroidRuntime(8900): at android.widget.TextView.<init>(TextView.java:561)
05-07 11:23:38.820: E/AndroidRuntime(8900): at com.example.aaaaa.MainActivity.<init>(MainActivity.java:28)
05-07 11:23:38.820: E/AndroidRuntime(8900): at java.lang.Class.newInstanceImpl(Native Method)
05-07 11:23:38.820: E/AndroidRuntime(8900): at java.lang.Class.newInstance(Class.java:1319)
05-07 11:23:38.820: E/AndroidRuntime(8900): at android.app.Instrumentation.newActivity(Instrumentation.java:1026)
05-07 11:23:38.820: E/AndroidRuntime(8900): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1883)
05-07 11:23:38.820: E/AndroidRuntime(8900): ... 11 more
これは MainActivity.java です MainActivity に TextView がないため、エラーが発生していると思いますがTextView view = new TextView(this);、別のクラス (setting.java) の textview からデータを抽出したい
import java.util.ArrayList;
import java.util.List;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.ItemizedOverlay;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;
import com.google.android.maps.OverlayItem;
public class MainActivity extends MapActivity {
String num;
TextView view = new TextView(this);
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Bundle extra = getIntent().getExtras();
num = extra.getString("label");
final TextView view = new TextView(this);
Uri uriSMSURI = Uri.parse("content://sms/inbox");
Cursor cur = getContentResolver().query(uriSMSURI, null, null, null,null);
String sms = "";
while (cur.moveToNext()) {
String spn ="+21629188153";
String phNum =cur.getString(2);
if (spn.equals(phNum)){
sms +=cur.getString(12);
}
}
String a =sms.substring(0,10);
String b =sms.substring(11,21);
MapView maMap;
MapController monControler;
maMap = (MapView)findViewById(R.id.myGmap);
maMap.setBuiltInZoomControls(true);
GeoPoint point = new GeoPoint (microdegrees(Double.parseDouble(a)),microdegrees(Double.parseDouble(b)));
MonOverlay object = new MonOverlay(getResources().getDrawable(R.drawable.marker_voisinage_rouge));
object.addPoint(point);
maMap.getOverlays().add(object);
maMap.setSatellite(true);
monControler = maMap.getController();
monControler.setZoom(12);
monControler.setCenter(point);
Button monBouton = (Button)findViewById(R.id.envoie_sms);
monBouton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
View monBoutton = null;
// TODO Auto-generated method stub
Intent monIntent = new Intent(MainActivity.this,SendSms.class);
startActivity(monIntent);
}
} );
Button mnBouton = (Button)findViewById(R.id.setting);
mnBouton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
View monBoutton = null;
// TODO Auto-generated method stub
setContentView(R.layout.setting);
}
} );
Button myBouton = (Button)findViewById(R.id.aff);
myBouton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
View monBoutton = null;
// TODO Auto-generated method stub
view.setText(num);
setContentView(view);
}
} );
}
private int microdegrees (double value){
return (int)(value*1000000);
}
@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
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
public class MonOverlay extends ItemizedOverlay<OverlayItem>{
List<GeoPoint> points = new ArrayList<GeoPoint>();
public MonOverlay(Drawable arg0) {
super(boundCenterBottom(arg0));
// TODO Auto-generated constructor stub
}
@Override
protected OverlayItem createItem(int i) {
GeoPoint point = points.get(i);
return new OverlayItem(point,"titre","description");
}
@Override
public int size() {
return points.size();
}
public void addPoint (GeoPoint point){
this.points.add(point);
populate();
}
}
}
これはs1 = num.getText().toString();Setting.java で、MainActivity.javaに渡したい
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class setting extends Activity {
Button sauvg;
EditText num;
String s1;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.setting);
sauvg = (Button)findViewById(R.id.ok);
num = (EditText)findViewById(R.id.editText1);
sauvg.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v)
{
Intent t = new Intent(setting.this, MainActivity.class);
s1 = num.getText().toString();
t.putExtra("label",s1);
startActivity(t);
// TODO Auto-generated method stub
}
});
}
}