设置自定义属性android的值

<resources>
    <declare-styleable name="CustomView">
        <attr name="customProperty" format="string" />
    </declare-styleable>
</resources>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <com.example.CustomView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:customProperty="Hello World" />

</LinearLayout>

public class CustomView extends View {
    private String customProperty;

    public CustomView(Context context, AttributeSet attrs) {
        super(context, attrs);

        TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.CustomView);
        customProperty = typedArray.getString(R.styleable.CustomView_customProperty);
        typedArray.recycle();
    }

    // 其他代码...
}