TextDrawable - getSupportActionBar.setLogo(Drawable drawable) 无效

Question

我想在我的工具栏中放置一个带有来自 https://github.com/amulyakhare/TextDrawable 的自定义可绘制对象的徽标。

但是这段代码什么也没显示

TextDrawable drawable = TextDrawable.builder() .buildRound("A", Color.RED); getSupportActionBar().setLogo(drawable);

但如果我尝试使用 "normal" 可绘制对象，它会起作用。

getSupportActionBar().setLogo(R.drawable.ic_launcher);

提前致谢

Answer 1

编辑： Mike M. 在评论中添加的解决方案效果不错，但看起来很糟糕：

下面是这个解决方案的代码：

Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
TextDrawable drawable = TextDrawable.builder().beginConfig().width(40).height(40).endConfig()
        .buildRound("A", Color.RED);
toolbar.setLogo(drawable);

NOTE: In this solution you need to set width() and height() of your TextDrawable logo, as it has as default value -1. Without that you won't see your TextDrawable icon.

That's because of that the Toolbar class creates logo dynamically with wrap_content parameters.

TextDrawable takes width and height of your ImageView, so please DON'T use wrap_content value, otherwise it would get default -1 value and you won't see your image.

Instead of it, set hard-coded value like in an example below, match_parent or use layout_weight to set how big your TextDrawable you want.

这是我的解决方案 - 使用自定义工具栏创建一个 TextDrawable 徽标

1. 创建名称为 action_bar.xml
的自定义布局

2. 输入这段代码

   <ImageView
       android:id="@+id/image_view"
       android:layout_width="32dp"
       android:layout_height="32dp"
       tools:src="@mipmap/ic_launcher"/>
   
   <TextView
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:paddingLeft="10dp"
       android:text="@string/app_name"
       android:textColor="#ffffff"
       android:textSize="24sp"
       android:textAlignment="gravity"
       android:gravity="center_vertical"/>
   

3. 添加到 MainActivity class 中的 onCreate 方法，此代码：

   //SET A DRAWABLE TO IMAGEVIEW
   Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
   setSupportActionBar(toolbar);
   getSupportActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
   getSupportActionBar().setCustomView(R.layout.actionbar_main);
   
   TextDrawable drawable = TextDrawable.builder()
           .buildRound("A", getResources().getColor(R.color.colorAccent));
   ImageView imageView = (ImageView) findViewById(R.id.image_view);
   imageView.setImageDrawable(drawable);
   

4. 更改后应如下所示：

希望对您有所帮助