Android: Permanently Elevate View

Question

I have a RecyclerView, that has a RippleEffect as well as a StateListAnimator (which is shown below): anim_lift.xml

Solution 1:

This can be achieved by using the selected state of the View. If you click the View you setSelected(true) and when you click it again setSelected(false).

yourView.setOnClickListener(new View.OnClickListener() {
    public void onClick(View v) {
        v.setSelected(!v.isSelected()); // toggle selected state
    }
});

The selected state then can be handled by the StateListAnimator. You may add a new item to catch state_selected="true":

<item android:state_selected="true">
    <set>
        <objectAnimator
            android:duration="@android:integer/config_shortAnimTime"
            android:propertyName="translationZ"
            android:valueTo="8dp"
            android:valueType="floatType"/>
    </set>
</item>

Now if the View is selected it will have an elevation of 8dp. If it's not selected the StateListAnimator will fall through to the default elevation of 0dp.

Baca Juga

Android Devweb

Android: Permanently Elevate View

Solution 1:

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