启动其他程序

private void startApp(String packname) {

// 只能把用户自己安装的程序的intent获取出来 启动

// 很多系统的app 找不到 lunchintent

// Intent intent =

// getPackageManager().getLaunchIntentForPackage(packname);

// intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

// startActivity(intent);

try {

PackageInfo info = getPackageManager().getPackageInfo(packname,

PackageManager.GET_ACTIVITIES);

ActivityInfo[] activityinfos = info.activities;

ActivityInfo activityinfo = activityinfos[0];

if (activityinfo != null) {

String classname = activityinfo.name;

Log.i(TAG, "classname " + classname);

Intent intent = new Intent();

intent.setClassName(packname, classname);

intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

startActivity(intent);

} else {

Toast.makeText(this, "无法启动该应用", 1).show();

}

} catch (Exception e) {

e.printStackTrace();

if (e instanceof ActivityNotFoundException) {

Toast.makeText(this, "无法启动该应用", 1).show();

}

}

}