使用 attrs.xml 中定义的意图能够启动自定义活动

Question

我正在扩展 ConstraintLayout 以便能够进行自定义，并且希望从外部类或 layout.xml 获取活动启动意图，并在单击此自定义视图时启动该活动。我知道如何将图标和文本作为属性，但不知道如何将意图作为属性。以下是我目前拥有的。如有任何帮助，我们将不胜感激。

public class MyGridDelegate extends ConstraintLayout implements View.OnClickListener {

    private String text;
    private Drawable icon;
    private Intent link;
    
    public MyGridDelegate (...)
    {
        TypedArray a = getContext().obtainStyledAttributes(attrs, R.styleable.MyGridLayoutDelegate, defStyle, 0);

        String text = a.getString(R.styleable.MyGridLayoutDelegate_text);
        Drawable icon = a.getDrawable(R.styleable.MyGridLayoutDelegate_icon);
        Intent link = .....; // *********Intent is missing*********
    }

    @Override
    public void onClick(View v) {
        // Launch some activity that is received as attribute
        MyGridDelegate.this.startActivity(this.link);
    }
}

attrs.xml

<declare-styleable name="MyGridDelegate">
        <attr name="text" format="string" />
        <attr name="icon" format="integer" />
        <attr name="link" format="******dont know*****" />
</declare-styleable>

layout_main.xml

<vendor.xxxx.yyy.MyGridLayout
        style="@style/MyGridLayoutStyle"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintLeft_toLeftOf="parent">

        <vendor.xxxx.yyy.MyGridLayoutDelegate
            style="@style/MyGridLayoutDelegateStyle"
            app:icon="@drawable/settings_bl_icon"
            app:text="Bluetooth"
            app:link="****dont know*****"
            android:layout_row="0"
            android:layout_column="0"/>

Answer 1

我发现我可以将要启动的活动名称作为字符串传递。然后做这样的事情：

       setOnClickListener(v -> {
            Intent intent = new Intent();
            intent.setClassName(getContext(), m_link);
            getContext().startActivity(intent);
        });