在Android开发中使用自定义组合控件的例子

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="fill_parent"  android:layout_height="60dip" >  <TextView    android:id="@+id/tv_title"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_alignParentLeft="true"    android:layout_marginLeft="5dip"    android:layout_marginTop="5dip"      android:textColor="#000000"    android:textSize="20dip" />  <TextView    android:id="@+id/tv_desc"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_below="@+id/tv_title"    android:layout_marginLeft="5dip"    android:layout_marginBottom="5dip"        android:textColor="#99000000"    android:textSize="18dip" />  <CheckBox    android:clickable="false"    android:focusable="false"    android:id="@+id/cb_status"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_alignParentRight="true"    android:layout_centerVertical="true"    android:layout_marginRight="20dip" />  <View    android:layout_width="fill_parent"    android:layout_height="0.2dip"    android:layout_alignParentBottom="true"    android:layout_alignParentLeft="true"    android:layout_marginLeft="5dip"    android:layout_marginRight="5dip"    android:background="#000000" /></RelativeLayout>

<?xml version="1.0" encoding="utf-8"?><resources>  <declare-styleable name="TextView">    <attr name="title" format="string" />    <attr name="desc_on" format="string" />    <attr name="desc_off" format="string" />  </declare-styleable></resources>

public class SettingItemView extends RelativeLayout {  private CheckBox cb_status;  private TextView tv_title;  private TextView tv_desc;  private String title;  private String desc_on;  private String desc_off;  public void iniview(Context context){    View.inflate(context, R.layout.setting_item_view, this);    cb_status = (CheckBox)findViewById(R.id.cb_status);    tv_title = (TextView)findViewById(R.id.tv_title);    tv_desc = (TextView)findViewById(R.id.tv_desc);  }  public SettingItemView(Context context, AttributeSet attrs, int defStyle) {    super(context, attrs, defStyle);    iniview(context);  }  public SettingItemView(Context context, AttributeSet attrs) {    super(context, attrs);    iniview(context);    title = attrs.getAttributeValue("http://schemas.android.com/apk/res/com.victor.mobilesafe","title");    desc_on = attrs.getAttributeValue("http://schemas.android.com/apk/res/com.victor.mobilesafe","desc_on");    desc_off = attrs.getAttributeValue("http://schemas.android.com/apk/res/com.victor.mobilesafe","desc_off");    tv_title.setText(title);    setDesc(desc_off);  }  public SettingItemView(Context context) {    super(context);    iniview(context);  }  public boolean isChecked(){    return cb_status.isChecked();  }  public void setChecked(boolean checked){    if (checked) {      setDesc(desc_on);    }else{      setDesc(desc_off);    }    cb_status.setChecked(checked);  }  public void setDesc(String text){    tv_desc.setText(text);  }}

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  xmlns:victor="http://schemas.android.com/apk/res/com.victor.mobilesafe"  android:layout_width="match_parent"  android:layout_height="match_parent"  android:orientation="vertical" > <com.victor.mobilesafe.ui.SettingItemView    android:id="@+id/siv_update"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    victor:desc_off="自动更新关闭"    victor:desc_on="自动更新开启"    victor:title="设置自动更新" >  </com.victor.mobilesafe.ui.SettingItemView></LinearLayout>

xmlns:victor="http://schemas.android.com/apk/res/<包名>"xmlns:victor="http://schemas.android.com/apk/res/com.victor.mobilesafe"

 itheima:title="设置自动更新" itheima:desc_on="设置自动更新已经开启" itheima:desc_off="设置自动更新已经关闭"