在静态方法中使用getActivity（）

Question

public class QRProductActivityPageObject {


    public static void testProductDetail() throws InterruptedException {

        ActivityTestRule<ProductInfoActivity> rule = new ActivityTestRule<ProductInfoActivity>(ProductInfoActivity.class, true, false);
        Intent intent = new Intent();
        intent.setClass(getActivity(), ProductInfoActivity.class);
        rule.launchActivity(intent);
        Thread.sleep(2000);
     }
}

The above syntax show error that you cant access getActivity() in static method . But i want to call this new Activity(ProductInfoActivity) through static method only.Any suggestion??

Answer 1

Pass context when method call in Activity or fragment and get Activity from context in static method

 public static void testProductDetail(Context context) throws InterruptedException {

ActivityTestRule<ProductInfoActivity> rule = new  ActivityTestRule<ProductInfoActivity>(ProductInfoActivity.class, true, false);
Intent intent = new Intent();
Activity activity = (Activity) context;
intent.setClass(activity , ProductInfoActivity.class);
rule.launchActivity(intent);
Thread.sleep(2000);
 }

Call static method In activity

  testProductDetail(getApplicationContext());

In fragment

  testProductDetail(getActivity().getApplicationContext());

Answer 2

You can get the activity from view:

Activity activity = (Activity)view.getContext()

If you use FragmentActivity (it seems to be so), then cast Context to FragmentActivity (instead of regular Activity) and further you will able to call getSupportFragmentManager()

FragmentActivity activity = (FragmentActivity)view.getContext();
FragmentManager manager = activity.getSupportFragmentManager();

Hope this works for you.

Answer 3

Or use the solution I found around here a few weeks ago, it's pretty awesome and elegant. You'd be able to use it anywhere in your APP!

1. Create a class MyApplication (you could name it differently):

     public class MyApplication extends Application { private static Context context; public void onCreate() { super.onCreate(); MyApplication.context = getApplicationContext(); } public static Context getAppContext() { return MyApplication.context; } } 

2. Go to your app Manifest file and add to the <application... tag the android:name attribute with the value of the name of the class we created:

    <application android:allowBackup="true" android:icon="@drawable/appico" android:label="@string/app_name" android:name="MyApplication" 

Now you can get the context for your app from any class like that

MyApplication.getAppContext();

Answer 4

You don't need to call getActivity(). Instead of using setClass() method which requires you to give a context object, you can use setClassName(String packageName, String className) method. Try this:

Intent intent = new Intent();
intent.setClassName("package.name.of.your.app", 
        ProductInfoActivity.class.getName());