android Launcher3设置默认桌面应用

<?xml version="1.0" encoding="utf-8"?><favorites xmlns:launcher="http://schemas.android.com/apk/res-auto/com.android.launcher3"> <!-- Hotseat (We use the screen as the position of the item in the hotseat) --> <!-- Messaging, [All Apps], Dialer --> <resolve  launcher:container="-101"  launcher:screen="0"  launcher:x="0"  launcher:y="0" >  <favorite launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_MESSAGING;end" />  <favorite launcher:uri="sms:" />  <favorite launcher:uri="smsto:" />  <favorite launcher:uri="mms:" />  <favorite launcher:uri="mmsto:" /> </resolve> <!-- All Apps --> <resolve  launcher:container="-101"  launcher:screen="2"  launcher:x="2"  launcher:y="0" >  <favorite launcher:uri="#Intent;action=android.intent.action.DIAL;end" />  <favorite launcher:uri="tel:123" />  <favorite launcher:uri="#Intent;action=android.intent.action.CALL_BUTTON;end" /> </resolve> <!-- Bottom row --> <resolve  launcher:screen="0"  launcher:x="0"  launcher:y="-1" >  <favorite launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_EMAIL;end" />  <favorite launcher:uri="mailto:" /> </resolve> <resolve  launcher:screen="0"  launcher:x="1"  launcher:y="-1" >  <favorite launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_GALLERY;end" />  <favorite launcher:uri="#Intent;type=images/*;end" /> </resolve> <resolve  launcher:screen="0"  launcher:x="2"  launcher:y="-1" >  <favorite launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_MARKET;end" />  <favorite launcher:uri="market://details?id=com.android.launcher" /> </resolve> <!-- Second last row --> <resolve  launcher:screen="0"  launcher:x="0"  launcher:y="-2" >  <favorite launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_BROWSER;end" />  <favorite launcher:uri="http://www.example.com/" /> </resolve> <resolve  launcher:screen="0"  launcher:x="2"  launcher:y="-2" >  <favorite launcher:uri="#Intent;action=android.media.action.STILL_IMAGE_CAMERA;end" />  <favorite launcher:uri="#Intent;action=android.intent.action.CAMERA_BUTTON;end" /> </resolve></favorites>

<resolve  launcher:container="-101"//-101应该代表是hotseat，也就是说此应用将处于hotseat里  launcher:screen="0"//应用所处屏幕  launcher:x="0"//应用图标所处x位置  launcher:y="0" >//应用图标所处y位置   <favorite //标明这是快捷方式  launcher:className="com.android.dialer.DialtactsActivity"//点击图标启动的类  launcher:packageName="com.android.dialer" //应用包名 /></resolve>