为什么视图没有更新？

Question

I'm building an app which has 2 fragment containers and takes screenshot feature. the problem is whenever one of the 2 fragment containers update with another fragment(replaced) and I'm taking a screenshot it shows the previous fragments and not the updated ones.

I'm using getView().getRootView() within another fragment in the activity to take the screenshot. any advice on why it happens?

Answer 1

Please be more elaborate about the problem or try to add the code.

If you are not using the FrameLayout, please use this.

Code for Adding FrameLayout:

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <FrameLayout
        android:id="@+id/your_placeholder"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"></FrameLayout>

</android.support.constraint.ConstraintLayout>

To add or replace new Fragments use the FragmentTransaction.

// Code inside the onCreate method
getSupportFragmentManager().beginTransaction()
               .replace(R.id.your_placeholder, new TheOtherFragment())
               .commit();

To take screen Shot :

View view = findViewById(R.id.your_placeholder);
view.setDrawingCacheEnabled(true);
view.setDrawingCacheQuality(View.DRAWING_CACHE_QUALITY_HIGH);
Bitmap screenshot = Bitmap.createBitmap(view.getDrawingCache());
view.setDrawingCacheEnabled(false);

Answer 2

To take screen Shot :

View view = findViewById(R.id.id_of_constraintLayout); 
// Here you assign the view Variable to the id of the View hosting all your Views. 

view.setDrawingCacheEnabled(true);
view.setDrawingCacheQuality(View.DRAWING_CACHE_QUALITY_HIGH);

Bitmap screenshot = Bitmap.createBitmap(view.getDrawingCache());
view.setDrawingCacheEnabled(false);