Android 获取所有已安装应用信息(图标，名称，版本号，包) ，并在自己程序打开某个应用

Intent intent = new Intent(Intent.ACTION_MAIN, null);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
List<ResolveInfo> appsList = getPackageManager().queryIntentActivities(intent, 0);
for (int i = 0; i < appsList.size(); i++) {
ResolveInfo mResolveInfo = appsList.get(i);

// package name
String packageName = mResolveInfo.activityInfo.packageName;

......
}

for (int i = 0; i < appsList.size(); i++) {
ResolveInfo mResolveInfo = appsList.get(i);

// package name
String packageName = mResolveInfo.activityInfo.packageName;

if (packageName.contains("com.myapp")) {   //匹配包名

// class name
String className = mResolveInfo.activityInfo.name;

ComponentName mComponentName = new ComponentName(packageName, className);
Intent intentAPP = new Intent();
if (mComponentName != null) {
intentAPP.setComponent(mComponentName);
}

//打开应用
startActivity(intentAPP);
}
}