Android电话拨号器（实例）

因为应用要使用手机的电话服务，所以要在清单文件AndroidManifest.xml中添加电话服务权限:

<?xml version="1.0"encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"     package="cn.itcast.action"     android:versionCode="1"     android:versionName="1.0">     略....   <uses-sdk android:minSdkVersion=“6" />   <uses-permission android:name="android.permission.CALL_PHONE"/></manifest>

界面布局:

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:layout_width="fill_parent"    android:layout_height="fill_parent" >    <TextView      android:layout_width="fill_parent" android:layout_height="wrap_content"     android:text="@string/inputmobile"/>        <EditText android:layout_width="fill_parent" android:layout_height="wrap_content"    android:id="@+id/mobile"/>        <Button android:layout_width="wrap_content" android:layout_height="wrap_content"    android:text="@string/button"    android:id="@+id/button"/></LinearLayout>

LinearLayout (线性布局)、AbsoluteLayout(绝对布局)、RelativeLayout(相对布局)、TableLayout(表格布局)、FrameLayout(帧布局)

Activity:

Activity:public class DialerAction extends Activity {    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        Button button = (Button)findViewById(R.id.button);        button.setOnClickListener(new View.OnClickListener(){public void onClick(View v) {        EditText editText = (EditText)findViewById(R.id.mobile);        Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:"+ editText.getText()));       DialerAction.this.startActivity(intent);}        });    }}