名字已知获取activity的ResolveInfo对象

我想添加activity（com.myapp.launcher.settings）到空的ArrayList中：

ArrayList<ResolveInfo> selectedApps = new ArrayList<ResolveInfo>();
selectedApps.add(/*WHAT GOES IN HERE?*/);

但是我不知道怎么获取ResolveInfo对象。

我试过使用一个工作环境，将所有的应用循环一遍需找activity，实现之后发现这种方法不是很好用。

// Get an array list of all apps
ArrayList<ResolveInfo> allApps = (ArrayList<ResolveInfo>) pm.queryIntentActivities(intent, PackageManager.PERMISSION_GRANTED);
for(final ResolveInfo app : allApps) {
    // If it's name is "com.myapp.launcher.settings" add it
    if(app.activityInfo.name.equals("com.myapp.launcher.settings")) {
            selectedApps.add(app);
        }
    }

使用resolveActivity配合显性intent。就可以：

Intent intent = new Intent();
intent.setComponent(new ComponentName("com.myapp", "com.myapp.launcher.settings"));
ResolveInfo app = pm.resolveActivity(intent, 0);
selectedApps.add(app);