setText bringt App zum Absturz -> Neuliung brauch Hilfe

1<?xml version="1.0" encoding="utf-8"?>
2<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
3 android:id="@android:id/tabhost"
4 android:layout_width="fill_parent"
5 android:layout_height="fill_parent">
6 <RelativeLayout
7 android:orientation="vertical"
8 android:layout_width="fill_parent"
9 android:layout_height="fill_parent">
10 <TabWidget
11 android:id="@android:id/tabs"
12 android:layout_width="fill_parent"
13 android:layout_height="wrap_content"
14 android:layout_alignParentBottom="true"/>
15 <FrameLayout
16 android:id="@android:id/tabcontent"
17 android:layout_width="fill_parent"
18 android:layout_height="fill_parent"
19 android:padding="5dp" >
20 <ScrollView android:id="@+id/scrollView1" android:layout_width="fill_parent" android:layout_height="fill_parent">
21 <LinearLayout android:id="@+id/linearLayout1" android:layout_width="fill_parent" android:layout_height="fill_parent">
22 <TextView android:text="TextView" android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content"></TextView>
23 </LinearLayout>
24 </ScrollView>
25 </FrameLayout>
26 </RelativeLayout>
27</TabHost>

1package de.benbecker.hellotabwidget;
2
3import org.apache.http.HttpResponse;
4import org.apache.http.client.HttpClient;
5import org.apache.http.client.methods.HttpGet;
6import org.apache.http.impl.client.DefaultHttpClient;
7import org.json.JSONObject;
8
9import android.app.Activity;
10import android.os.Bundle;
11import android.widget.TextView;
12
13public class ArtistsActivity extends Activity {
14 public void onCreate(Bundle savedInstanceState) {
15 setContentView(R.layout.main);
16 super.onCreate(savedInstanceState);
17 final String txtUrl = "http://tests.benjaminbecker.de/app.php";
18 final TextView txtResult = new TextView(this);
19
20 TextView tv = (TextView) findViewById(R.id.textView1);
21 tv.setText("HALLLLLLLLLOOOOOOOOOOOOOOOOOOOOOO");
22 setContentView(tv);
23 txtResult.setText("leer");
24 getRequest(txtResult,txtUrl);
25 TextView textview = new TextView(this);
26 textview.setText("TEST");
27 setContentView(txtResult);
28 }
29
30 public void getRequest(TextView txtResult, String txtUrl){
31 String url = txtUrl;
32 JSONObject Jarr=null;
33 HttpClient client = new DefaultHttpClient();
34 HttpGet request = new HttpGet(url);
35 try{
36 HttpResponse response = client.execute(request);
37 String text=HttpHelper.request(response);
38 try {
39 Jarr= new JSONObject(text);
40 } catch (Exception e) {
41 e.printStackTrace();
42 }
43 txtResult.setText(Jarr.getString("richtig"));
44 }catch(Exception ex){
45 txtResult.setText("Failed!");
46 }
47 }
48
49}