Android7.0 MTK设置默认桌面

本文实例为大家分享了android7.0 mtk设置默认桌面的具体代码，供大家参考，具体内容如下

项目需求:客户安装自己公司的桌面apk，安装完成后自动设置为默认桌面且不弹出始终和仅一次的弹框

1.找到安装应用的文件

frameworks\base\services\core\java\com\android\server\pm\packagemanagerservice.java

 try {
   packageparser.package newpackage = scanpackagetracedli(pkg, policyflags, scanflags,
     system.currenttimemillis(), user);

   updatesettingsli(newpackage, installerpackagename, null, res, user);

   if (res.returncode == packagemanager.install_succeeded) {
 
 
    prepareappdataafterinstalllif(newpackage);
 

 log.d("yh", "pkgname " +pkgname);
 // 由于客户的应用保密 这里使用点心桌面的包名---com.dianxinos.dxhome
 if (pkgname.equals("com.dianxinos.dxhome")){
  //发送广播
  intent intent = new  intent("android.intent.action.update_lanucher_apps");
  mcontext.sendbroadcast(intent);
 }
    //------------------------


   } else {
    // remove package from internal structures, but keep around any
    // data that might have already existed
    deletepackagelif(pkgname, userhandle.all, false, null,
      packagemanager.delete_keep_data, res.removedinfo, true, null);
   }
  } catch (packagemanagerexception e) {
   res.seterror("package couldn't be installed in " + pkg.codepath, e);
  }

  trace.traceend(trace_tag_package_manager);
 }

2.由于设置默认桌面时，是在settings中设置的所以广播接收者在settings中添加并设置默认桌面（添加文件–packages\apps\settings\src\com\android\settings下—updatelanucherreceiver.java）

package com.android.settings;

import android.content.broadcastreceiver;
import android.content.context;
import android.content.intent;
import android.content.componentname;
import android.content.intentfilter;
import android.content.pm.packagemanager;
import android.content.pm.resolveinfo;
import java.util.arraylist;
import android.util.log;
import android.content.pm.activityinfo;
import java.util.list;


public class updatelanucherreceiver extends broadcastreceiver {
 
 public updatelanucherreceiver() {
 }
 
 @override
 public void onreceive(context context, intent intent) {
  if (intent.getaction().equals("android.intent.action.update_lanucher_apps")) {
 log.e("yhyh" ," onreceive");
 
 final packagemanager mpm = context.getpackagemanager();

   // 点心桌面的包名类名 com.dianxinos.dxhome / com.nd.hilauncherdev.launcher.launcher设置默认桌面
 componentname defaultlauncher=new componentname(" com.dianxinos.dxhome",
     "com.nd.hilauncherdev.launcher.launcher");
   arraylist<resolveinfo> homeactivities = new arraylist<resolveinfo>();
   componentname currentdefaulthome = mpm.gethomeactivities(homeactivities);

   componentname[]mhomecomponentset = new componentname[homeactivities.size()];
   for (int i = 0; i < homeactivities.size(); i++) {
    final resolveinfo candidate = homeactivities.get(i);
    log.e("yhyh","homeactivitie: candidate = "+candidate);
    final activityinfo activityinfo= candidate.activityinfo;
    componentname activityname = new componentname(activityinfo.packagename, activityinfo.name);
    mhomecomponentset[i] = activityname;
   }
   intentfilter mhomefilter = new intentfilter(intent.action_main);
   mhomefilter.addcategory(intent.category_home);
   mhomefilter.addcategory(intent.category_default);
   list<componentname>activities=new arraylist();
   mpm.replacepreferredactivity(mhomefilter, intentfilter.match_category_empty,mhomecomponentset, defaultlauncher);
   
 //刷新桌面
  intent intent2 = new intent(intent.action_main);
   intent2.setflags(intent.flag_activity_new_task);
   intent2.addcategory(intent.category_home);
   context.startactivity(intent2);
 }
 }
}

3.packages\apps\settings\androidmanifest.xml

<!-- yh -->
 <receiver
   android:name=".updatelanucherreceiver" >
   <intent-filter>
    <action android:name="android.intent.action.update_lanucher_apps" />
   </intent-filter>
</receiver>

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。