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- package com.example.testen;
- import android.os.Bundle;
- public class MainActivity extends ActionBarActivity {
- TextView tv;
- Button b1;
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_main);
- b1 = (Button)findViewById(R.id.button1);
- tv = (TextView)findViewById(R.id.textView1);
- b1.setOnClickListener(new View.OnClickListener() {
- @Override
- public void onClick(View v) {
- // TODO Auto-generated method stub
- tv.setText("hello");
- }
- });
- if (savedInstanceState == null) {
- getSupportFragmentManager().beginTransaction()
- .add(R.id.container, new PlaceholderFragment())
- .commit();
- }
- }
- @Override
- public boolean onCreateOptionsMenu(Menu menu) {
- // Inflate the menu; this adds items to the action bar if it is present.
- getMenuInflater().inflate(R.menu.main, menu);
- return true;
- }
- @Override
- public boolean onOptionsItemSelected(MenuItem item) {
- // Handle action bar item clicks here. The action bar will
- // automatically handle clicks on the Home/Up button, so long
- // as you specify a parent activity in AndroidManifest.xml.
- int id = item.getItemId();
- if (id == R.id.action_settings) {
- return true;
- }
- return super.onOptionsItemSelected(item);
- }
- /**
- * A placeholder fragment containing a simple view.
- */
- public static class PlaceholderFragment extends Fragment {
- public PlaceholderFragment() {
- }
- @Override
- public View onCreateView(LayoutInflater inflater, ViewGroup container,
- Bundle savedInstanceState) {
- View rootView = inflater.inflate(R.layout.fragment_main, container, false);
- return rootView;
- }
- }
- }
- <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
- xmlns:tools="http://schemas.android.com/tools"
- android:layout_width="match_parent"
- android:layout_height="match_parent"
- android:paddingBottom="@dimen/activity_vertical_margin"
- android:paddingLeft="@dimen/activity_horizontal_margin"
- android:paddingRight="@dimen/activity_horizontal_margin"
- android:paddingTop="@dimen/activity_vertical_margin"
- tools:context="com.example.testen.MainActivity$PlaceholderFragment" >
- <TextView
- android:id="@+id/textView1"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:text="@string/hello_world" />
- <Button
- android:id="@+id/button1"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:layout_below="@+id/textView1"
- android:layout_marginTop="62dp"
- android:text="Button" />
- </RelativeLayout>
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