参考文章
Home Setting
adb shell am start -a android.settings.HOME_SETTINGS
adb shell dumpsys package pref
pref[erred]: print preferred package settings
$ dumpsys package pref
Preferred Activities User 0:
Non-Data Actions:
android.intent.action.MAIN:
572566a com.tencent.mobileqq/.activity.SplashActivity
mMatch=0x100000 mAlways=true
Selected from:
com.woyou.launcher/com.android.launcher3.Launcher
com.tencent.mobileqq/.activity.SplashActivity
com.android.settings/.FallbackHome
Action: "android.intent.action.MAIN"
Category: "android.intent.category.HOME"
Category: "android.intent.category.DEFAULT"
AutoVerify=false
adb shell dumpsys package preferred-xml
preferred-xml [–full]: print preferred package settings as xml
$ adb shell dumpsys package preferred-xml
<?xml version='1.0' encoding='utf-8' standalone='yes' ?>
<preferred-activities>
<item name="com.tencent.mobileqq/.activity.SplashActivity">
<filter>
<action name="android.intent.action.MAIN" />
<cat name="android.intent.category.HOME" />
<cat name="android.intent.category.DEFAULT" />
</filter>
</item>
</preferred-activities>
PMS
接口
// 设置默认桌面
public abstract void replacePreferredActivity(IntentFilter filter, int match,
ComponentName[] set, ComponentName activity);
// 启动桌面
private ResolveInfo chooseBestActivity(Intent intent, String resolvedType,
int flags, List<ResolveInfo> query, int userId) {
---------------------------------------------------------------------
// 第一级别筛选
// If there is more than one activity with the same priority,
// then let the user decide between them.
ResolveInfo r0 = query.get(0);
ResolveInfo r1 = query.get(1);
// If the first activity has a higher priority, or a different
// default, then it is always desirable to pick it.
if (r0.priority != r1.priority
|| r0.preferredOrder != r1.preferredOrder
|| r0.isDefault != r1.isDefault) { // Intent.CATEGORY_DEFAULT
return query.get(0);
}
// 第二级筛选
// If we have saved a preference for a preferred activity for
// this Intent, use that.
ResolveInfo ri = findPreferredActivity(intent, resolvedType,
flags, query, r0.priority, true, false, debug, userId);
if (ri != null) {
return ri;
}
---------------------------------------------------------------------
}
// 从Preferred中查找
ResolveInfo findPreferredActivity(Intent intent, String resolvedType, int flags,
List<ResolveInfo> query, int priority, boolean always,
boolean removeMatches, boolean debug, int userId) {
Home 启动
