在Android开发中使用自定义组合控件的例子

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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);
  }

}

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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"