How to use vector drawables with View besides ImageView with srcCompat?

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旧巷少年郎
旧巷少年郎 2020-12-13 03:45

app:srcCompat with ImageView allows for backward compatible use of vector drawables. But how can you use them with other Views besides

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  • 2020-12-13 04:20

    set vector drawable to side drawable in textview in android

    AppCompatTextView now supports app:drawableLeftCompat, app:drawableTopCompat, app:drawableRightCompat, app:drawableBottomCompat, app:drawableStartCompat and app:drawableEndCompat compound drawables, supporting backported drawable types such as VectorDrawableCompat.

    Include this in your gradle file

    implementation 'androidx.appcompat:appcompat:1.1.0-alpha01'
    

    In your text view you can use

    app:drawableLeftCompat
    app:drawableStartCompat
    
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  • 2020-12-13 04:28

    Vector drawables can be used pre-Lollipop in other places than app:srcCompat, but it comes with a price.

    I've made this diagram to help (valid for Support Library 23.4.0 to - at least - 25.1.0).

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  • 2020-12-13 04:28

    You can add Vector Drawable in TextView programmatically. Make use of VectorDrawableCompat inorder to add drawableLeft/ drawableRight /drawableTop/ drawableBottom/ drawableStart/ drawableEnd.

    Steps:

    i. If TextView is inside Activity:

    TextView tvUserName= (TextView)findViewById(R.id.et_username_or_email);
    VectorDrawableCompat drawableCompat=VectorDrawableCompat.create(getResources(), R.drawable.layer_list_ic_user, tvUserName.getContext().getTheme());
    tvUserName.setCompoundDrawablesRelativeWithIntrinsicBounds(drawableCompat, null, null, null);
    

    ii. If TextView is inside Fragment:

    TextView tvUserName= (TextView )view.findViewById(R.id.et_username_or_email);
    VectorDrawableCompat drawableCompat=VectorDrawableCompat.create(getActivity().getResources(), R.drawable.layer_list_ic_user, tvUserName.getContext().getTheme());
    tvUserName.setCompoundDrawablesRelativeWithIntrinsicBounds(drawableCompat, null, null, null);
    

    For more information on VectorDrawableCompat Refer this link

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  • 2020-12-13 04:28

    I'm using new support library and all I have to do is:

    compile 'com.android.support:appcompat-v7:25.1.1'
    

    In Build.gradle file

     defaultConfig {
    
        vectorDrawables.useSupportLibrary = true
    }
    

    Now Where ever you are using like fragment, activity or adapter use this as the first line in your class

    static {
        AppCompatDelegate.setCompatVectorFromResourcesEnabled(true);
    }
    

    after that use like as we do before, something.xml

    <ImageView
        android:id="@+id/ivMainNavigationIcon"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
    

    Something.java

    thumbIcon.setImageDrawable(ContextCompat.getDrawable(context,R.drawable.ic_check_circle_black_24dp));
    

    or if you have drawable id needed to be set dynamically

    thumbIcon.setImageDrawable(ContextCompat.getDrawable(context,drawableID));
    
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  • 2020-12-13 04:30

    Update 2: They have added an option to enable it again in Support Library 23.4.0:

    For AppCompat users, we’ve added an opt-in API to re-enable support Vector Drawables from resources (the behavior found in 23.2) via AppCompatDelegate.setCompatVectorFromResourcesEnabled() - keep in mind that this still can cause issues with memory usage and problems updating Configuration instances, hence why it is disabled by default.

    Update: This no longer works starting from version 23.3.0

    For AppCompat users, we’ve decided to remove the functionality which let you use vector drawables from resources on pre-Lollipop devices due to issues found in the implementation in version 23.2.0/23.2.1 [https://code.google.com/p/android/issues/detail?id=205236, https://code.google.com/p/android/issues/detail?id=204708]. Using app:srcCompat and setImageResource() continues to work.

    From Android Developers Google+ post


    Using AppCompat and app:srcCompat is the most foolproof method of integrating vector drawables into your app.

    That quote is from the official blogpost for the release of version 23.2.0 of the Support Library.

    The post also mentions the following:

    You’ll find directly referencing vector drawables outside of app:srcCompat will fail prior to Lollipop. However, AppCompat does support loading vector drawables when they are referenced in another drawable container such as a StateListDrawable, InsetDrawable, LayerDrawable, LevelListDrawable, and RotateDrawable. By using this indirection, you can use vector drawables in cases such as TextView’s android:drawableLeft attribute, which wouldn’t normally be able to support vector drawables.

    This translates to the steps below:

    Step 1:

    Create or import a vector resource which you require for the app. For example, one can create a vector drawable for the search icon and name it ic_action_search_vector.xml

    Step 2:

    Create another proxy drawable resource for the vector drawable previously created. Say, for the previous ic_action_search_vector.xml, ic_action_search.xml can be created as a simple StateListDrawable which could contain the lines below:

    <?xml version="1.0" encoding="utf-8"?>
    <selector xmlns:android="http://schemas.android.com/apk/res/android">
        <item android:drawable="@drawable/ic_action_search_vector"/>
    </selector>
    

    This step can be skipped if you have referenced the vector drawable from another drawable resource which you will use with your View.

    Step 3:

    Use the drawable resource (here, ic_action_search.xml) that refers to the vector drawable (ic_action_search_vector.xml) instead of the vector drawable directly. For a menu, it would look like:

    <item android:id="@+id/search"
            android:title="@string/search"
            android:icon="@drawable/ic_action_search"
            app:showAsAction="always"/>
    

    This is the solution to that problem!

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  • 2020-12-13 04:31

    Android 5.0 (API level 21) and higher provides vector drawable support. If your app has a minimum API level that is lower, Vector Asset Studio adds the vector drawable file to your project; also, at build time, Gradle creates PNG raster images at various resolutions. Gradle generates the PNG densities specified by the Domain Specific Language (DSL) generatedDensities property in a build.gradle file. To generate PNGs, the build system requires Android Plugin for Gradle 1.5.0 or higher.

    This is not true if you include in your gradle vectorDrawables.useSupportLibrary = true

    either set to false or remove the line completely and all your vectors will work as they were. But for olders versions of android they will be able to rely on the converted PNG

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