Android电话拨号程序核心代码

public class PhoneActivity extends Activity {
 
 private EditText txtcontet;
 
 private Button btnOK ;
 
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        btnOK = (Button) this.findViewById(R.id.btnOK);
        btnOK.setOnClickListener(new BtnListener());
    }
   
    /**
     * 注册按钮监听事件
     * @author Administrator
     *
     */
    private class BtnListener implements View.OnClickListener{

  public void onClick(View v) {
   txtcontet = (EditText) findViewById(R.id.phonenum);
   String phoneNum  = txtcontet.getText().toString();
   Intent intent = new Intent();
   intent.setAction("android.intent.action.CALL");
   intent.addCategory("android.intent.category.DEFAULT");
   intent.setData(Uri.parse("tel:"+phoneNum));
   startActivity(intent);
   Toast.makeText(PhoneActivity.this, R.string.success, 3).show();
  }
     
     
    }
}