Android mobile guard-custom composite widget component layout structure, android component

Android mobile guard-custom composite widget component layout structure, android component

Since the layout in the settings center entries is similar, you can consider using custom composite controls to simplify the implementation.

URL: http://www.cnblogs.com/wuyudong/p/5909043.html.

Custom composite controls

1. Extract the prepared layout file to a class for management. Next time you need to use this layout structure, directly use the objects corresponding to the composite control.

2. Extract the layout of the composite control to a separate xml file.

Create a layout file: setting_item_view.xml. Put the code in the layout file in the previous article

<? Xml version = "1.0" encoding = "UTF-8"?> <RelativeLayout xmlns: android = "http://schemas.android.com/apk/res/android" android: layout_width = "match_parent" android: layout_height = "wrap_content"> <RelativeLayout android: layout_width = "match_parent" android: layout_height = "wrap_content" android: padding = "5dp"> <TextView android: id = "@ + id/TV _title" android: layout_width = "wrap_content" android: layout_height = "wrap_content" android: text = "automatic update settings" android: textColor = "#000" android: textSize = "18sp"/> <TextView android: id = "@ + id/TV _des" android: layout_width = "wrap_content" android: layout_height = "wrap_content" android: layout_below = "@ id/TV _title" android: text = "auto update disabled" android: textColor = "#000" android: textSize = "18sp"/> <CheckBox android: id = "@ + id/cb_box" android: layout_width = "wrap_content" android: layout_height = "wrap_content" android: feature = "true" android: layout_centerVertical = "true"/> <View android: layout_width = "match_parent" android: layout_height = "1dp" android: layout_below = "@ id/TV _des" android: background = "#000"/> </RelativeLayout>

3. Use a separate class SettingItemView. java to load the layout file.

Package com. wuyudong. mobilesafe. view; import com. wuyudong. mobilesafe. r; import android. content. context; import android. util. attributeSet; import android. view. view; import android. widget. checkBox; import android. widget. relativeLayout; import android. widget. textView; public class SettingItemView extends RelativeLayout {private TextView TV _des; private CheckBox cb_box; public SettingItemView (Context context) {this (context, null);} public SettingItemView (Context context, AttributeSet attrs) {this (context, null, 0);} public SettingItemView (Context context, AttributeSet attrs, int defStyle) {super (context, attrs, defStyle ); // xml --> view converts the entries in the setting interface to the view object. inflate (context, R. layout. setting_item_view, this); // equivalent to the following two lines of code/** View view = View. inflate (context, R. layout. setting_item_view, null); * this. addView (view); * // Title Description in the Custom Composite Control TextView TV _title = (TextView) findViewById (R. id. TV _title); TV _des = (TextView) findViewById (R. id. TV _des); cb_box = (CheckBox) findViewById (R. id. cb_box );}}

In this way, you only need a few lines of code to call the layout file.

<? Xml version = "1.0" encoding = "UTF-8"?> <LinearLayout xmlns: android = "http://schemas.android.com/apk/res/android" android: layout_width = "match_parent" android: layout_height = "match_parent" android: orientation = "vertical"> <TextView style = "@ style/TitleStyle" android: text = "set Center"/> <! -- <RelativeLayout android: layout_width = "match_parent" android: layout_height = "wrap_content" android: padding = "5dp"> <TextView android: id = "@ + id/TV _title" android: layout_width = "wrap_content" android: layout_height = "wrap_content" android: text = "auto update settings" android: textColor = "#000" android: textSize = "18sp"/> <TextView android: id = "@ + id/TV _des" android: layout_width = "wrap_content" android: layout_height = "wrap_content" android: layout_below = "@ id/TV _title" android: text = "auto update disabled" android: textColor = "#000" android: textSize = "18sp"/> <CheckBox android: id = "@ + id/cb_box" android: layout_alignParentRight = "true" android: layout_centerVertical = "true" android: layout_width = "wrap_content" android: layout_height = "wrap_content"/> <View android: layout_below = "@ id/TV _des" android: background = "#000" android: layout_width = "match_parent" android: layout_height = "1dp"/> </RelativeLayout> --> <com. wuyudong. mobilesafe. view. settingItemView android: layout_width = "match_parent" android: layout_height = "wrap_content"> </com. wuyudong. mobilesafe. view. settingItemView> </LinearLayout>

After running the project, the following results are displayed: