java - 是否可以使用 android :DrawableRight? 在 Buttons 和 TextViews 中使用 VectorDrawable

标签 java android android-layout android-vectordrawable compound-drawables

当我在 textview 或 imageview 中使用 VectorDrawable 资源时，在使用“android:DrawableRight”/“android:DrawableEnd”/“android:DrawableStart”/“android:DrawableLeft”时会出现运行时崩溃。

应用程序可以正常编译，不会出现任何警告。

我正在使用

  • Gradle 1.5
  • 支持库 23.2 ('com.android.support:appcompat-v7:23.2.0')

但我发现，我可以在 Java 中以编程方式分配 SVG，而不会发生这样的崩溃。

TextView tv = (TextView) findViewById(R.id.textView);
tv.setCompoundDrawablesWithIntrinsicBounds(null,null, getResources().getDrawable(R.drawable.ic_accessible_white_36px),null);

(我怀疑这是 23.2 的支持库错误。)

但是是否可以将 drawableRight 等用于 SVG Assets ？

这是我的布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="au.com.angryitguy.testsvg.MainActivity">


<TextView
    android:id="@+id/textView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:drawableRight="@drawable/ic_accessible_white_36px"
    android:background="@color/colorPrimary"
    android:textColor="#FFFFFF"
    android:textSize="22sp"
    android:text="Hello World!"/>
</RelativeLayout>

这是我的 Activity 

package au.com.angryitguy.testsvg;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        }
    }

这是来自 Google Material 设计网站的未经修改的 VectorDrawable 资源。

<vector android:height="24dp" android:viewportHeight="24.0"
    android:viewportWidth="24.0" android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
    <path android:fillColor="#FFFFFF" android:pathData="M12,4m-2,0a2,2 0,1 1,4 0a2,2 0,1 1,-4 0"/>
    <path android:fillColor="#FFFFFF" android:pathData="M19,13v-2c-1.54,0.02 -3.09,-0.75 -4.07,-1.83l-1.29,-1.43c-0.17,-0.19 -0.38,-0.34 -0.61,-0.45 -0.01,0 -0.01,-0.01 -0.02,-0.01L13,7.28c-0.35,-0.2 -0.75,-0.3 -1.19,-0.26C10.76,7.11 10,8.04 10,9.09L10,15c0,1.1 0.9,2 2,2h5v5h2v-5.5c0,-1.1 -0.9,-2 -2,-2h-3v-3.45c1.29,1.07 3.25,1.94 5,1.95zM12.83,18c-0.41,1.16 -1.52,2 -2.83,2 -1.66,0 -3,-1.34 -3,-3 0,-1.31 0.84,-2.41 2,-2.83L9,12.1c-2.28,0.46 -4,2.48 -4,4.9 0,2.76 2.24,5 5,5 2.42,0 4.44,-1.72 4.9,-4h-2.07z"/>
</vector>

这是我的应用 build.gradle

apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.2"

    defaultConfig {
        applicationId "au.com.angryitguy.testsvg"
        minSdkVersion 16
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
        // Stops the Gradle plugin’s automatic rasterization of vectors
        generatedDensities = []
    }
    // Flag to tell aapt to keep the attribute ids around
    aaptOptions {
        additionalParameters "--no-version-vectors"
    }
    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'
}

这是崩溃。 (注意引用 textview 的 inflate 错误。)

java.lang.RuntimeException: Unable to start activity ComponentInfo{
    au.com.angryitguy.testsvg/au.com.angryitguy.testsvg.MainActivity}: 
    android.view.InflateException: Binary XML file line #13: 
    Error inflating class TextView

at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
at android.app.ActivityThread.access$600(ActivityThread.java:130)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4745)
...

Caused by: android.view.InflateException: 
    Binary XML file line #13: Error inflating class TextView
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:267)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:129)
at au.com.angryitguy.testsvg.MainActivity.onCreate(MainActivity.java:14)
at android.app.Activity.performCreate(Activity.java:5008)
...

Caused by: android.content.res.Resources$NotFoundException: 
    File res/drawable/ic_accessible_white_36px.xml from drawable resource ID #0x7f02004b
at android.content.res.Resources.loadDrawable(Resources.java:1918)
at android.content.res.TypedArray.getDrawable(TypedArray.java:601)
at android.widget.TextView.<init>(TextView.java:622)
at android.support.v7.widget.AppCompatTextView.<init>(AppCompatTextView.java:60)
at android.support.v7.widget.AppCompatTextView.<init>(AppCompatTextView.java:56)
at android.support.v7.app.AppCompatViewInflater.createView(AppCompatViewInflater.java:103)
at android.support.v7.app.AppCompatDelegateImplV7.createView(AppCompatDelegateImplV7.java:963)
at android.support.v7.app.AppCompatDelegateImplV7.onCreateView(AppCompatDelegateImplV7.java:1022)
at android.support.v4.view.LayoutInflaterCompatHC$FactoryWrapperHC.onCreateView(LayoutInflaterCompatHC.java:44)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:675)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:746) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:489) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:396) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:352) 
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:267) 
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:129) 
at au.com.angryitguy.testsvg.MainActivity.onCreate(MainActivity.java:14) 
at android.app.Activity.performCreate(Activity.java:5008) 
...

Caused by: org.xmlpull.v1.XmlPullParserException:
    Binary XML file line #1: invalid drawable tag vector
at android.graphics.drawable.Drawable.createFromXmlInner(Drawable.java:877)
at android.graphics.drawable.Drawable.createFromXml(Drawable.java:818)
at android.content.res.Resources.loadDrawable(Resources.java:1915)
at android.content.res.TypedArray.getDrawable(TypedArray.java:601) 
at android.widget.TextView.<init>(TextView.java:622) 
at android.support.v7.widget.AppCompatTextView.<init>(AppCompatTextView.java:60) 
at android.support.v7.widget.AppCompatTextView.<init>(AppCompatTextView.java:56) 
at android.support.v7.app.AppCompatViewInflater.createView(AppCompatViewInflater.java:103) 
at android.support.v7.app.AppCompatDelegateImplV7.createView(AppCompatDelegateImplV7.java:963) 
at android.support.v7.app.AppCompatDelegateImplV7.onCreateView(AppCompatDelegateImplV7.java:1022) 
at android.support.v4.view.LayoutInflaterCompatHC$FactoryWrapperHC.onCreateView(LayoutInflaterCompatHC.java:44) 
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:675) 
at android.view.LayoutInflater.rInflate(LayoutInflater.java:746) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:489) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:396) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:352) 
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:267) 
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:129) 
at au.com.angryitguy.testsvg.MainActivity.onCreate(MainActivity.java:14) 
at android.app.Activity.performCreate(Activity.java:5008) 
...

最佳答案

it possible to use drawableRight etc for SVG assets ?

是的

AppCompatTextView now支持app:drawableLeftCompat、app:drawableTopCompat、app:drawableRightCompat、app:drawableBottomCompat、app: drawableStartCompat 和 app:drawableEndCompat 复合可绘制对象，支持向后移植的可绘制类型，例如 VectorDrawableCompat。

将其包含在您的 gradle 文件中

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

您可以在 TextView 中使用

app:drawableLeftCompat
app:drawableStartCompat

如果在按钮中使用 app:drawableLeftCompat、app:drawableStartCompat 时遇到问题，您需要将库更新为

androidx.appcompat:appcompat:1.2.0-alpha01

他们有一个错误

androidx.appcompat:appcompat:1.1.0-alpha01

你可以看到docs

或者如果您还不想更新，那么:

因为 Google 似乎不会很快对这个问题采取任何措施，所以我不得不为我的所有应用想出一个更可靠的可重用解决方案:

  1. 首先在应用的 attrs.xml 文件中添加自定义 TextView 属性“res/values/attrs.xml”:

    <resources>
    <declare-styleable name="CustomTextView">
        <attr name="drawableStartCompat" format="reference"/>
        <attr name="drawableEndCompat" format="reference"/>
        <attr name="drawableTopCompat" format="reference"/>
        <attr name="drawableBottomCompat" format="reference"/>
    </declare-styleable>
</resources>

  2. 然后像这样创建自定义 TextView 类:

    import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.support.v7.content.res.AppCompatResources;
import android.support.v7.widget.AppCompatTextView;
import android.util.AttributeSet;

public class CustomTextView extends AppCompatTextView {
    public CustomTextView(Context context) {
        super(context);
    }    
    public CustomTextView(Context context, AttributeSet attrs) {
        super(context, attrs);
        initAttrs(context, attrs);
    }
    public CustomTextView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        initAttrs(context, attrs);
    }

    void initAttrs(Context context, AttributeSet attrs) {
        if (attrs != null) {
            TypedArray attributeArray = context.obtainStyledAttributes(
                    attrs,
                    R.styleable.CustomTextView);

            Drawable drawableStart = null;
            Drawable drawableEnd = null;
            Drawable drawableBottom = null;
            Drawable drawableTop = null;
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                drawableStart = attributeArray.getDrawable(R.styleable.CustomTextView_drawableStartCompat);
                drawableEnd = attributeArray.getDrawable(R.styleable.CustomTextView_drawableEndCompat);
                drawableBottom = attributeArray.getDrawable(R.styleable.CustomTextView_drawableBottomCompat);
                drawableTop = attributeArray.getDrawable(R.styleable.CustomTextView_drawableTopCompat);
            } else {
                final int drawableStartId = attributeArray.getResourceId(R.styleable.CustomTextView_drawableStartCompat, -1);
                final int drawableEndId = attributeArray.getResourceId(R.styleable.CustomTextView_drawableEndCompat, -1);
                final int drawableBottomId = attributeArray.getResourceId(R.styleable.CustomTextView_drawableBottomCompat, -1);
                final int drawableTopId = attributeArray.getResourceId(R.styleable.CustomTextView_drawableTopCompat, -1);

                if (drawableStartId != -1)
                    drawableStart = AppCompatResources.getDrawable(context, drawableStartId);
                if (drawableEndId != -1)
                    drawableEnd = AppCompatResources.getDrawable(context, drawableEndId);
                if (drawableBottomId != -1)
                    drawableBottom = AppCompatResources.getDrawable(context, drawableBottomId);
                if (drawableTopId != -1)
                    drawableTop = AppCompatResources.getDrawable(context, drawableTopId);
            }

            // to support rtl
            setCompoundDrawablesRelativeWithIntrinsicBounds(drawableStart, drawableTop, drawableEnd, drawableBottom);
            attributeArray.recycle();
        }
    }
}

  3. 现在您可以通过自定义属性在任何布局中轻松使用它:

    <YOUR_VIEW_PACKAGE.CustomTextView
    android:id="@+id/edt_my_edit_text"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    app:drawableStartCompat="@drawable/your_vector_drawable" <!-- vector drawable -->
    app:drawableEndCompat="@drawable/your_vector_drawable" <!-- vector drawable -->
    app:drawableTopCompat="@drawable/your_vector_drawable" <!-- vector drawable -->
    app:drawableBottomCompat="@drawable/your_vector_drawable" <!-- vector drawable -->
    />
    • 您可以使用 Button、EditText 和 RadioButton 做类似的事情，因为它们派生自 TextView

希望这会有所帮助:)

关于java - 是否可以使用 android :DrawableRight? 在 Buttons 和 TextViews 中使用 VectorDrawable，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/35761636/

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