如何以编程方式将值传递给我的 CustomView？

Question

attrs.xml:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <declare-styleable name="InteractiveImageView">
        <attr name="play_anim" format="reference|integer" />
    </declare-styleable>
</resources>

usage_example(activity_main).xml

<com.doitandroid.mylottie.InteractiveImageView
    app:play_anim="@raw/icon_home">

</com.doitandroid.mylottie.InteractiveImageView>

当我想以编程方式添加此视图时，该怎么做？

MainActivity.java:

LinearLayout linearLayout = findViewById(R.id.main_ll);
InteractiveImageView interactiveImageView = new InteractiveImageView(this);
linearLayout.addView(interactiveImageView);

我不知道如何添加app:play_anim="@raw/icon_home"这部分。

Answer 1

您应该具有以下形式的构造函数：

    public InteractiveImageView(Context context, @Nullable AttributeSet attrs) {
    super(context, attrs);
    loadAttributes(attrs); //Here use the attributes.
}

使用 AttributeSet 传递您的值。

示例：

    private void loadAttributes(AttributeSet attrs) {
    if (attrs != null) {
        TypedArray typedArray = mContext.obtainStyledAttributes(attrs, R.styleable.AudioPlayerView);
        mBackgroundDrawable = typedArray.getDrawable(R.styleable.AudioPlayerView_player_background);
    }
}

Answer 2

您的自定义视图应该有一个函数，例如

public void setPlayAnim(@RawRes int playAnim) {
        // do something 
}

然后你可以从

这样的代码调用

interactiveImageView.setPlayAnim(R.raw.somthing)

如何以编程方式将值传递给我的 CustomView？

How to pass value to my CustomView programmatically?

android

android-custom-view