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public class MainActivity extends ActionBarActivity {
private TextView textView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textView=(TextView)findViewById(R.id.textView);
textView.setText("Hello Android");
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment())
.commit();
}
}
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world" />
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.fragment_main);
textView=(TextView)findViewById(R.id.textView);
textView.setText("Hello Android");
public final class R {
public static final class attr {
}
public static final class drawable {
public static final int icon=0x7f020000;
}
public static final class id {
public static final int height=0x7f050000;
public static final int result=0x7f050003;
public static final int submit=0x7f050002;
public static final int suggest=0x7f050004;
public static final int weight=0x7f050001;
}
public static final class layout {
public static final int main=0x7f030000;
}