Machen Sie Aktivität FrameLayout Hintergrund sichtbar unter Fragment-Layout

Question

Ich möchte ein Hintergrundbild auf meine Aktivitäten SetContentView() Layout festlegen, und haben das gleiche Bild konsequent unter meinen Fragment Ansichten sichtbar. Ich habe versucht, das Hintergrundbild auf meinem Root-Layout zu setzen und den Hintergrund für untergeordnete Layouts transparent zu machen, aber es funktioniert nicht wie erwartet.

Ps. Sorry für den Code/Layout-Dump, ich würde lieber alles hier setzen und dann etwas auslassen, das das Problem verursachen könnte.

Picasso Init in onCreate Aktivität:

 Picasso.Builder b = new Picasso.Builder(getApplicationContext()); 
     if (BuildConfig.DEBUG) { 
      b.loggingEnabled(true); 
      b.indicatorsEnabled(true); 
     } 
     b.memoryCache(new LruCache(getApplicationContext())); 
     Picasso.setSingletonInstance(b.build()); 

Datenbindung Code:

private static Target t; 
@BindingAdapter("android:backgroundUrl") 
    public static void setBackgroundUrl(final ViewGroup view,final String url) { 
     if(Strings.isNullOrEmpty(url)){ 
      return; 
     } 
     t = new Target() { 
      @Override 
      public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) { 
       view.setBackground(new BitmapDrawable(view.getResources(),bitmap)); 
       Log.e("Picasso","onBitmapLoaded: " + from.name()); 
      } 

      @Override 
      public void onBitmapFailed(Drawable errorDrawable) { 
       Log.e("BindingTools.setBackUrl","Failed to load: " + url); 
      } 

      @Override 
      public void onPrepareLoad(Drawable placeHolderDrawable) { 
       //do nothing 
      } 
     }; 
     Picasso.with(view.getContext()).load(url).into(t); 
    } 

Aktivität Layout:

<?xml version="1.0" encoding="utf-8"?> 
<layout 
    xmlns:android="http://schemas.android.com/apk/res/android"> 
    <data class=".RootBinding"> 
     <variable name="backgroundUrl" type="String"/> 
    </data> 
    <FrameLayout 
     android:backgroundUrl="@{backgroundUrl}" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:scaleType = "centerCrop"> 
    <FrameLayout 
     android:id="@+id/fragment_container" 
     android:layout_height="match_parent" 
     android:layout_width="match_parent" 
     android:background="@color/Transparent"> 
    </FrameLayout> 

    </FrameLayout> 
</layout> 

Beispiel Fragment Layout:

<layout 
    xmlns:app="http://schemas.android.com/apk/res-auto" 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    tools:context=".Fragments.AccountFragment"> 
    <data class=".AccountBinding"> 
     <import type="android.view.View" /> 
     <variable name="user" type="packageName.ViewModels.AccountViewModel"/> 
     <variable name="loginBtnEvent" type="View.OnClickListener"/> 
     <variable name="usernameError" type="String"/> 
     <variable name="passwordError" type="String"/> 
     <variable name="backgroundUrl" type="String"/> 
    </data> 
    <FrameLayout 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:layout_gravity="center" 
     android:background="@color/Transparent"> 
     <android.support.v7.widget.CardView 
      android:layout_marginTop="16dp" 
      android:layout_marginBottom="4dp" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:layout_marginEnd="16dp" 
      android:layout_marginRight="16dp" 
      android:layout_marginStart="16dp" 
      android:layout_marginLeft="16dp"> 
      <android.support.v7.widget.LinearLayoutCompat 
       android:orientation="vertical" 
       android:layout_width="match_parent" 
       android:layout_height="wrap_content"> 
       <android.support.design.widget.AppBarLayout 
        android:layout_width="match_parent" 
        android:layout_height="wrap_content" 
        android:layout_marginBottom="16dp" 
        app:elevation="0dp"> 
        <android.support.v7.widget.LinearLayoutCompat 
         android:orientation="horizontal" 
         android:layout_width="match_parent" 
         android:layout_height="wrap_content"> 
         <android.support.v7.widget.Toolbar 
          android:layout_margin="16dp" 
          android:layout_height="wrap_content" 
          android:layout_width="match_parent" 
          app:title="@string/app_name" 
          app:subtitle="@{!user.IsReAuth ? @string/login : @string/login_message_return, default=@string/login}" 
          app:subtitleTextColor="@color/cardview_light_background" 
          app:titleTextColor="@color/cardview_light_background"> 
          <com.mikhaellopez.circularimageview.CircularImageView 
           android:layout_gravity="end" 
           android:layout_width="45dp" 
           android:layout_height="45dp" 
           android:layout_margin="2dp" 
           app:civ_border_color="@color/colorPrimaryDark" 
           app:civ_border_width="4dp" 
           android:src="@{user.ImageUrl, default=@drawable/user}" 
           android:tint="@color/cardview_light_background" 
           /> 
         </android.support.v7.widget.Toolbar> 
        </android.support.v7.widget.LinearLayoutCompat> 
        <ProgressBar 
         android:visibility="@{user.IsLoadingAccount ? View.VISIBLE : View.INVISIBLE}" 
         style="?android:attr/progressBarStyleHorizontal" 
         android:layout_marginBottom="-8dp" 
         android:layout_marginTop="-4dp" 
         android:layout_width="match_parent" 
         android:layout_height="wrap_content" 
         android:backgroundTint="@color/colorAccent" 
         android:indeterminate="true" 
         android:indeterminateBehavior="cycle"/> 
       </android.support.design.widget.AppBarLayout> 

       <android.support.design.widget.TextInputLayout 
        android:layout_width="match_parent" 
        android:layout_height="wrap_content" 
        app:errorEnabled="true" 
        android:errorText="@{usernameError}" 
        android:paddingEnd="8dp" 
        android:paddingRight="8dp" 
        android:paddingStart="8dp" 
        android:paddingLeft="8dp"> 
        <android.support.design.widget.TextInputEditText 
         android:layout_width="match_parent" 
         android:layout_height="wrap_content" 
         android:inputType="textNoSuggestions" 
         android:hint="@string/username" 
         android:text="@={user.UserName}"/> 
       </android.support.design.widget.TextInputLayout> 

       <android.support.design.widget.TextInputLayout 
        android:layout_width="match_parent" 
        android:layout_height="wrap_content" 
        app:errorEnabled="true" 
        android:errorText="@{passwordError}" 
        android:paddingEnd="8dp" 
        android:paddingRight="8dp" 
        android:paddingStart="8dp" 
        android:paddingLeft="8dp"> 
        <android.support.design.widget.TextInputEditText 
         android:layout_width="match_parent" 
         android:layout_height="wrap_content" 
         android:inputType="textPassword" 
         android:hint="@string/password" 
         android:text="@={user.Password}"/> 
       </android.support.design.widget.TextInputLayout> 
       <android.support.v7.widget.ButtonBarLayout 
        android:layout_gravity="right" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content"> 
        <android.support.v7.widget.AppCompatButton 
         android:layout_width="wrap_content" 
         android:layout_height="wrap_content" 
         android:visibility="@{!user.IsReAuth ? View.GONE : View.VISIBLE}" 
         android:text="@string/removeAccount" 
         style="@style/Base.Widget.AppCompat.Button.Borderless"/> 
        <android.support.v7.widget.AppCompatButton 
         android:layout_width="wrap_content" 
         android:layout_height="wrap_content" 
         android:text="@string/login" 
         android:onClick="@{loginBtnEvent}" 
         style="@style/Base.Widget.AppCompat.Button.Borderless"/> 
       </android.support.v7.widget.ButtonBarLayout> 

      </android.support.v7.widget.LinearLayoutCompat> 
     </android.support.v7.widget.CardView> 

    </FrameLayout> 

</layout> 

Code, das Fragment enthält: (Edit: Das Problem war die erste Zeile dieser Funktion)

private void setRootFragment(Fragment f, boolean addToStack) { 
    rootBinding = (RootBinding) DataBindingUtil.setContentView(this, R.layout.root); 
    FragmentTransaction transaction = getSupportFragmentManager().beginTransaction(); 
    transaction.replace(R.id.fragment_container, f); 
    if(addToStack){ 
     transaction.addToBackStack(null); 
    }else{ 
     transaction.disallowAddToBackStack(); 
    } 
    transaction.commit(); 
} 

strings.xml Trasparent Wert:

<color name="Transparent">#00000000</color> 

Answer 1

Das Problem war, dass ich die Daten wurde Neueinstellung -bindendes Objekt und blies jedesmal seine Sicht auf, wenn ich Fragmente wechseln wollte.

Code, das Fragment setzt:

private void setRootFragment(Fragment f, boolean addToStack) { 

    //this line of code needs to be in oncreate and not called every time I switch fragments. 
    //rootBinding = (RootBinding) DataBindingUtil.setContentView(this, R.layout.root); 
    FragmentTransaction transaction = getSupportFragmentManager().beginTransaction(); 
    transaction.replace(R.id.fragment_container, f); 
    if(addToStack){ 
     transaction.addToBackStack(null); 
    }else{ 
     transaction.disallowAddToBackStack(); 
    } 
    transaction.commit(); 
}