Android 如何在TextView中创建阴影？

我有一个在TextView中创建阴影的要求

我怎样才能做到呢？附加屏幕排序

如果你有任何想法，请告诉我

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谢谢！！！提前。

在XML中添加高程属性。将其设置为5dp

<TextView
    android:id="@+id/myText"
    ...
    android:elevation="5dp" />

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在XML中添加高程属性。将其设置为5dp

<TextView
    android:id="@+id/myText"
    ...
    android:elevation="5dp" />

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在API>=21上，您可以直接使用

CustomViewOutlineProvider

CustomViewOutlineProvider.java

@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
public class CustomViewOutlineProvider extends ViewOutlineProvider {
    int roundCorner;

    public CustomViewOutlineProvider(int round) {
        roundCorner = round;
    }

    @Override
    public void getOutline(View view, Outline outline) {
        outline.setRoundRect(0, 0, view.getWidth(), view.getHeight(), roundCorner);
    }
}

活动

    TextView textView = (TextView) findViewById(R.id.shadow_txt);
    textView.setOutlineProvider(new CustomViewOutlineProvider(30));
    textView.setClipToOutline(true);

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对于预列印设备（API>=21上的API），您可以直接使用

CustomViewOutlineProvider

CustomViewOutlineProvider.java

@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
public class CustomViewOutlineProvider extends ViewOutlineProvider {
    int roundCorner;

    public CustomViewOutlineProvider(int round) {
        roundCorner = round;
    }

    @Override
    public void getOutline(View view, Outline outline) {
        outline.setRoundRect(0, 0, view.getWidth(), view.getHeight(), roundCorner);
    }
}

活动

    TextView textView = (TextView) findViewById(R.id.shadow_txt);
    textView.setOutlineProvider(new CustomViewOutlineProvider(30));
    textView.setClipToOutline(true);

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用于预列印设备（如果您在Android Studio中找到shadowDx

shadowDy
shadowRadius
shadowColor
方法，请使用它们有什么问题？您将在Android Studio中找到shadowDx
shadowDy
shadowRadius
shadowColor
方法有什么问题，请使用它们estion？这不会导致发问者的图片！！而且它在Android版本中有限制它只在棒棒糖中工作+这不会导致发问者的图片！！而且它在Android版本中有限制它只在棒棒糖中工作+
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">

    <solid android:color="@color/colorPrimary"/>
    <corners android:radius="20dp" />

</shape>

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="colorPrimary">#3F51B5</color>
    <color name="colorPrimaryDark">#303F9F</color>

    <color name="alpha_15">#26000000</color>
</resources>