<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.phonecall.MainActivity" > <EditText android:id="@+id/editText1" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:layout_centerHorizontal="true" android:inputType="phone" > </EditText> <Button android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignLeft="@+id/editText1" android:layout_below="@+id/editText1" android:layout_marginTop="17dp" android:text="@string/dail" /> </RelativeLayout>
@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //找到button按钮 Button btn = (Button)this.findViewById(R.id.button1); //对按钮监听点击事件 btn.setOnClickListener(new CallListener()); } public class CallListener implements OnClickListener { @Override public void onClick(View v) { // TODO Auto-generated method stub //找text文本 EditText edit = (EditText)MainActivity.this.findViewById(R.id.editText1); //得到text文本中的内容 String number = edit.getText().toString(); //翻译为意图 Intent intent = new Intent(); //对intent设置对应的action intent.setAction(Intent.ACTION_CALL); //打电话 intent.setData(Uri.parse("tel:"+number)); startActivity(intent); } }
原文：http://www.cnblogs.com/zoro-zero/p/3923487.html