public class MainActivity extends Activity { EditText mPhoneNum,mMessage; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mPhoneNum=(EditText) findViewById(R.id.editText1); mMessage=(EditText) findViewById(R.id.editText2); } public void onClick(View v) { int id = v.getId(); String phoneNo = mPhoneNum.getText().toString(); //呼叫 if(id == R.id.button1){ Intent i = new Intent(); //设置动作名称 i.setAction("android.intent.action.CALL"); //设置意图数据 i.setData(Uri.parse("tel:" + phoneNo)); //开始活动 startActivity(i); } //发短信 else if(id == R.id.button2){ String smsContent = mMessage.getText().toString(); //得到默认的短信管理器 SmsManager sm = SmsManager.getDefault(); sm.sendTextMessage(phoneNo, null, smsContent, null, null); //提示用户信息,临时性通知 Toast toast = Toast.makeText(MainActivity.this, "发送完成", Toast.LENGTH_LONG); toast.setGravity(Gravity.TOP|Gravity.RIGHT, 50, 100); toast.show(); } } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.activity_main, menu); return true; } }

<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" tools:context=".MainActivity" > <Button android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_alignParentTop="true" android:onClick="onClick" android:text="打电话" /> <Button android:id="@+id/button2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:layout_toRightOf="@+id/button1" android:onClick="onClick" android:text="发短信" /> <EditText android:id="@+id/editText1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_below="@+id/button1" android:ems="10" android:hint="请输入电话号码" android:inputType="number" > <requestFocus /> </EditText> <EditText android:id="@+id/editText2" android:layout_width="wrap_content" android:layout_height="100dip" android:layout_alignParentLeft="true" android:layout_below="@+id/editText1" android:hint="请输入短信内容" android:ems="10" /> </RelativeLayout>