这是整套的

<FrameLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:scaleType="fitXY"
        android:src="@drawable/gohan" />

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:scaleType="fitXY"
        android:src="@drawable/triangle_shape" />
</FrameLayout>

triangle_shape.xml这将在您的 drawable 目录

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <rotate
            android:fromDegrees="-70" // you will have to tweak this a little for adjustment
            android:pivotX="100%"
            android:pivotY="75%"
            android:toDegrees="40">
            <shape android:shape="rectangle">
                <stroke
                    android:width="10dp"
                    android:color="@android:color/transparent" />
                <solid android:color="@android:color/holo_blue_bright" />
            </shape>
        </rotate>
    </item>
</layer-list>

输出