you must call setContentView(R.layout.activity_main)
before findViewById(R.id.callButton)
On Wednesday, April 24, 2013 11:01:13 PM UTC+3, Ravi Tewari wrote:
>
> Can anyone tell wats wrong here... I am new to Android but NOT to Java.. I
> am getting the error "Unfortunately App Stopped" while running it in
> emulator.
> Can anyone help to figure the error out here: (Plz note that I have
> already set the permission for Intent. Actually below ACTION_CALL Intent is
> working fine without adding any Button. But when I add the button and
> registers the OnClickListener, it starts giving the error.) So wats wrong
> below while registering the listener?
>
> Appreciate the response.. Let me know if any other info u need to debug..
>
> *My activity java file is:*
> package os.androidphonedialer;
> import android.os.Bundle;
> import android.app.Activity;
> import android.view.Menu;
> import android.view.View;
> import android.content.Intent;
> import android.net.Uri;
> import android.widget.Button;
> public class MainActivity extends Activity {
> @Override
> protected void onCreate(Bundle savedInstanceState) {
> super.onCreate(savedInstanceState);
> final Button callButton = (Button) findViewById(R.id.callButton);
> callButton.setOnClickListener(new Button.OnClickListener() {public
> void onClick(View v){
> Intent callIntent = new
> Intent(Intent.ACTION_CALL,Uri.parse("tel:5551212"));
> callIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
> startActivity(callIntent);
> }
> });
> setContentView(R.layout.activity_main);
> }
> @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;
> }
> }
>
> *And the layout file is:*
> <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=".MainActivity" >
> <Button
> android:id="@+id/callButton"
> android:layout_width="fill_parent"
> android:layout_height="wrap_content"
> android:text="Show Dialer" />
> </RelativeLayout>
>
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