Invalid drawable tag vector

问题

Im trying to use vector drawables on pre lollipop devices. I did all as instructed here but i still get this crash.

build.gradle:

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.0.0-beta6'
    }
}
apply plugin: 'com.android.application'

repositories {
    maven { url 'http://maven.android-forever.com' }
    jcenter()
}

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.2"

    defaultConfig {
        applicationId "com.test.app"
        minSdkVersion 16
        targetSdkVersion 22
        versionCode 1
        versionName "1.0"
        vectorDrawables.useSupportLibrary = true
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.2.0'
    compile 'com.android.support:design:23.2.0'
    compile "de.greenrobot:eventbus:2.4.0"
    compile 'de.greenrobot:greendao:2.1.0'
    compile "com.af:android-utility:1.0.0.9"
    compile project(':volleyplus')
    compile project (':libvlc')
}

triangle.xml:

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

triangle_v.xml

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:height="100dp"
    android:width="100dp"
    android:viewportHeight="100"
    android:viewportWidth="100">

<path
    android:name="triangle"
    android:fillColor="#FF0000"
    android:pathData="m 50,0 l 50,100 -100,0 z"/>

</vector>

layout.xml

<ImageView
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:background="@drawable/triangle"/>

I also tried app:srcCompat and in that case, drawable just dont show.

回答1:

This code is going to work with vector if using
vectorDrawables.useSupportLibrary = true

And change android:src to app:srcCompat.

For example,

<ImageView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:src="@drawable/triangle"/>

<ImageView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:srcCompat="@drawable/triangle"/>

回答2:

I faced a similar problem and @pedja's own answer is useful. More generally, as mentioned in Chris Banes's article on vector drawable compat, the support library works by injecting its version of ImageView over the system one on pre-L via some hooks. This implicitly requires the AppCompat versions of classes, such as AppCompatActivity, be used.

In my case, the vector drawable is used in a standalone toast-like view without an associated activity, using the Application context. I ended up using AppCompatImageView in the xml layout definition directly, i.e. something like

<android.support.v7.widget.AppCompatImageView
             android:id="@+id/some_id"
             android:layout_width="24dp"
             android:layout_height="24dp"
             android:src="@drawable/selector_referencing_vector_drawable"/>

thus there is no need for the magic "hook" mechanism. As tested this also works with the Activity class without the need of using AppCompatActivity. All the above was done without upgrading to 23.2.1, which addressed a different problem.

回答3:

Got this problem too when loading vectors from a selector on pre-lollipop devices:

Use AppCompatDelegate.setCompatVectorFromResourcesEnabled(true) in your onCreate method:

Sets whether vector drawables on older platforms (< API 21) can be used within android.graphics.drawable.DrawableContainer resources. When enabled, AppCompat can intercept some drawable inflation from the framework, which enables implicit inflation of vector drawables within android.graphics.drawable.DrawableContainer resources.

protected final void onCreate(Bundle savedInstanceState) {
         AppCompatDelegate.setCompatVectorFromResourcesEnabled(true);
         super.onCreate(savedInstanceState);
         ...

回答4:

The problem was that my activity wasn't extending AppCompatActivity but regular Activity.

This is not specified in any documentation/example for support vector drawables

回答5:

The answers given here are ignoring a situation when you wish to add a drawable to a textview because it gives the same error. in my case I had

<TextView .... android:drawableLeft="some_vectore_drawable" />

I could not find how to solve this so I removed that line from the xml code and put it in my java code in this manner

Drawable somevectordrable = AppCompatDrawableManager.get().getDrawable(context, R.drawable.somevectordrawable);
mytextview.setCompoundDrawableWithIntrinsicBounds(somevectordrable, null, null, null);

Clarification for the code,

Get the vector drawable from the drawables folder using AppCompatDrawableManager
Set the drawable we just got as the left drawable on our textview

回答6:

You also need to include the new vector support library:

compile 'com.android.support:support-vector-drawable:23.2.0'

回答7:

It works with 23.2.0 or 23.4.0, not 23.3.0. Seriously Google!

First up, this functionality was originally released in 23.2.0, but then we found some memory usage and Configuration updating issues so we it removed in 23.3.0. In 23.4.0 (technically a fix release) we’ve re-added the same functionality but behind a flag which you need to manually enable.

Ref : https://medium.com/@chrisbanes/appcompat-v23-2-age-of-the-vectors-91cbafa87c88#.waicp19gh

回答8:

That's all I fond over the internet, and it's work for me. Check which one you miss.

1) Inside build.gradle

 android {
        ...
        defaultConfig {
            ...
            vectorDrawables.useSupportLibrary = true
        }
  }

2) Must use buildToolsVersion '27.0.3' and compile 'com.android.support:appcompat-v7:27.0.3' similar version code.

3) Use upper then 3 gradle version
classpath 'com.android.tools.build:gradle:3.0.1'

4) For ImageView use app:srcCompat

xmlns:app="http://schemas.android.com/apk/res-auto"
app:srcCompat="@drawable/ic_logo"

5) But if you need android:drawableLeftor android:drawableRigth etc then:

ic_logo.xml (Vector xml)

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:width="@dimen/home.button.icon"
    android:height="@dimen/home.button.icon"
    android:viewportWidth="24.0"
    android:viewportHeight="24.0"
    tools:ignore="VectorRaster">
    <path
        android:fillColor="#FFFFFF"
        android:pathData="M9,16.17L4.83,12l-1.42,1.41L9,19 21,7l-1.41,-1.41z"/>
</vector>

ic_logo_select.xml (Vector selector)

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_checked="true"
        android:drawable="@drawable/ic_logo" />
    <item android:drawable="@drawable/ic_logo" />
</selector>

Now you can use android:drawableLeft or android:drawableRight

<android.support.v7.widget.AppCompatButton
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:drawableLeft="@drawable/ic_logo_select"/>

6) And at the end, setCompatVectorFromResourcesEnabled = true inside static which loads before the main method.

public class MainActivity extends AppCompatActivity {
     static {
            AppCompatDelegate.setCompatVectorFromResourcesEnabled(true);
     }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        ....
    }
}

回答9:

If you have this exception issue with drawableLeft,drawableRight,drawableTop, drawableXxx etc... And your project buildToolsVersion > 26.0.2.

Go check your app level gradle file, remove vectorDrawables.useSupportLibrary = true if exists, then crash gone.

This because buildTools will dispose vector resource after 26.0.2, but somehow conflict with vectorDrawables.useSupportLibrary = true.

Tested at 2019/03/27.

(if you can't find your buildToolsVersion in you app level gradle file, this mean you're using Android plugin for Gradle 3.0.0 or higher, your project automatically uses a default version of the build tools that the plugin specifies. In this case your buildToolsVersion already large than 26.0.2)

回答10:

This is support-v4, appcompat-v7 library v23.2.0 bug it appears in API 19. @tim provide link to this bug issue.

You can upgrade to new library version 23.2.1 and bug is fixed now.

回答11:

If you're having this issue with drawableLeft/drawableStart, etc. there is an easy solution, if you're using databinding.

Instead of:

android:drawableLeft="@drawable/somevector" ❌

Do:

android:drawableLeft="@{@drawable/somevector}" ✅

This works because databinding will generate code at compile time that retrieves the drawable in a compatible way.

回答12:

I found this issue on code.google.

It appears to be the same issue as you. Does this help? https://code.google.com/p/android/issues/detail?id=201843

回答13:

If you see yourself using <android.support.v7.widget.AppCompatImageView when loading a vector drawable it might be a better idea to extend AppCompatActivity instead of Activity and go back to using regular <ImageView...app:srcCompat="@drawable/...

来源：https://stackoverflow.com/questions/35819290/invalid-drawable-tag-vector

标签

android

android-vectordrawable