Android 实现双 Launcher 的无缝切换，flutter 免费视频教程
String examplePackageName = "com.jeejen.family"; //请修改为需要设置的 package name
String exampleActivityName = "com.jeejen.home.launcher.Launcher"; //请修改为需要设置的 launcher activity name
ComponentName defaultLauncher = null;
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_HOME);
List<ResolveInfo> resolveInfoList =
pm.queryIntentActivities(intent, 0);
if (resolveInfoList != null) {
int size = resolveInfoList.size();
for (int j = 0; j < size; ) {
final ResolveInfo r = resolveInfoList.get(j);
if (!r.activityInfo.packageName.equals(examplePackageName)) {
resolveInfoList.remove(j);
size -= 1;
} else {
j++;
}
}
ComponentName[] set = new ComponentName[size];
defaultLauncher = new ComponentName(examplePackageName, exampleActivityName);
int defaultMatch = 0;
for (int i = 0; i < size; i++) {
final ResolveInfo resolveInfo =
resolveInfoList.get(i);
set[i] = new ComponentName(resolveInfo.activityInfo.packageName, resolveInfo.activityInfo.name);
if (defaultLauncher.getClassName().equals(resolveInfo.activityInfo.name)) {
defaultMatch = resolveInfo.match;
}
}
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_MAIN);
filter.addCategory(Intent.CATEGORY_HOME);
filter.addCategory(Intent.CATEGORY_DEFAULT);
pm.clearPackagePreferredActivities(defaultLauncher.getPackageName());
pm.addPreferredActivity(filter, defaultMatch, set, defaultLauncher);
}
}
切换后启动当前的 Launcher,
public void startMainLauncher(){
Intent startMain = new Intent(Intent.ACTION_MAIN);
startMain.addCategory(Intent.CATEGORY_HOME);
startMain.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(startMain);
}
注意,如果直接切换的后 finish() 当前 Activity 会比较突兀,最后做一个延时的加载动画去
animdraw2.xml
<span style="color:#000000;"><?xml version="1.0" encoding="utf-8"?>
<rotate xmlns:android="http://schemas.android.com/apk/res/android"
android:drawable="@drawable/ll_loading_outside"
android:fromDegrees="0.0"
android:pivotX="50.0%"
android:pivotY="50.0%"
android:toDegrees="360.0" /></span>
activity_main.xml
<span style="color:#000000;"> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center"
android:layout_gravity="center"
tools:context=".MainActivity" >
<ProgressBar
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="10dip"
android:indeterminateDrawable="@drawable/animdraw2"
android:indeterminateDuration="1500" />
</LinearLayout></span>
<span style="color:#000000;">package com.rtkj.switchlauncher;
import java.util.List;
import java.util.Timer;
import java.util.TimerTask;
import android.app.Activity;
import android.content.ComponentName;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends Activity{
private Editor edit;
private SharedPreferences sp;
private Button bt_lock,bt_unlock;
private static final String DEFAULT_LAUNCHER="default_launcher";
private static final String LAUNCHER_NAME="com.snowfish.aios.launcher";
private static final String LAUNCHER_CLASS_NAME="com.snowfish.aios.launcher.MainActivity";
private static final String OLD_LAUNCHER_NAME="com.jeejen.family";
private static final String OLD_LAUNCHER_CLASS_NAME="com.jeejen.home.launcher.Launcher";
private static final String DEFAULT_OLD_MMS ="set_default_launcer_first";
private static final String DEFAULT_MMS=
"set_default_launcer_second";
public static final int FLAG_HOMEKEY_DISPATCHED = 0x80000000;//定义屏蔽参数
Timer timer = new Timer();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
this.getWindow().setFlags(FLAG_HOMEKEY_DISPATCHED, FLAG_HOMEKEY_DISPATCHED);
sp=getSharedPreferences("config_home", 0);
edit=sp.edit();
timer.schedule(task, 1000);
}
TimerTask task = new TimerTask() {
@Override
public void run() {
runOnUiThread(new Runnable() { // UI thread
@Override
public void run() {
//Toast.makeText(getApplicationContext(), "this show", 0).show();
switchHome();
finish();
}
});
}
};
public boolean onKeyDown(int keyCode, KeyEvent paramKeyEvent)
{
switch(keyCode){
case KeyEvent.KEYCODE_BACK:
case KeyEvent.KEYCODE_HOME:
case KeyEvent.KEYCODE_MENU:
//case KeyEvent.KEYCODE_VOLUME_DOWN:
//case KeyEvent.KEYCODE_VOLUME_UP:
//case KeyEvent.KEYCODE_VOLUME_MUTE:
return true;
default:
return false;
}
}
private void switchHome() {
if(sp.getBoolean(DEFAULT_LAUNCHER,true)){
edit.putBoolean(DEFAULT_LAUNCHER, false);
edit.commit();
setDefaultHome(OLD_LAUNCHER_NAME,OLD_LAUNCHER_CLASS_NAME,LAUNCHER_NAME,LAUNCHER_CLASS_NAME);
sendToBroad(DEFAULT_OLD_MMS);
killProgress(OLD_LAUNCHER_NAME,OLD_LAUNCHER_CLASS_NAME);
}else{
edit.putBoolean(DEFAULT_LAUNCHER, true);
edit.commit();
setDefaultHome(LAUNCHER_NAME,LAUNCHER_CLASS_NAME,OLD_LAUNCHER_NAME,OLD_LAUNCHER_CLASS_NAME);
sendToBroad(DEFAULT_MMS);
killProgress(LAUNCHER_NAME,LAUNCHER_CLASS_NAME);
}
}
public void sendToBroad(String msg){//发送广播通知系统替换默认的短信应用 其他文章有写
Intent intent=new Intent(msg);
sendBroadcast(intent);
}
public void killProgress(String packageName,String className){
/*Intent startMain = new Intent(Intent.ACTION_MAIN);
startMain.setComponent(new ComponentName(packageName, className));
startMain.addCategory(Intent.CATEGORY_HOME);
startMain.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(startMain);*/
Intent startMain = new Intent(Intent.ACTION_MAIN);
startMain.addCategory(Intent.CATEGORY_HOME);
startMain.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(startMain);
// overridePendingTransition(R.anim.zoomin, R.anim.zoomout);
//finish();
//android.os.Process.killProcess(android.os.Process.myPid());
}
private void setDefaultHome(String packeageName ,String className,String oldPackage,String oldName) {
PackageManager pm = getPackageManager();
IntentFilter f = new IntentFilter();
f.addAction(Intent.ACTION_MAIN);
f.addCategory(Intent.CATEGORY_HOME);
f.addCategory(Intent.CATEGORY_DEFAULT);
ComponentName component = new ComponentName(packeageName,className );
ComponentName[] components = new ComponentName[] {new ComponentName(oldPackage,oldName),component};
pm.clearPackagePreferredActivities(oldPackage);
pm.addPreferredActivity(f, IntentFilter.MATCH_CATEGORY_EMPTY, components, component);
//pm.replacePreferredActivity(f, IntentFilter.MATCH_CATEGORY_EMPTY, components, component);
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