file:///F:/workspace3/Android_ver2.4/src/cn/szy/com/MainActivity.java

package cn.szy.com;import android.app.Activity;import android.content.Intent;import android.net.Uri;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.EditText;public class MainActivity extends Activity {    /** Called when the activity is first created. */	private Button button;	private EditText edittext;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        button =  (Button)this.findViewById(R.id.button);        edittext = (EditText)this.findViewById(R.id.edittext);    }    public void Opentall(View v){    	String num = edittext.getText().toString();        Intent intent  = new Intent();		intent.setAction("android.intent.action.CALL");		intent.setData(Uri.parse("tel:"+ num));        startActivity(intent);    	    }}