How to implement card switching effect in Android?

2 years ago
Benjamin Taylor
2 minutes

There are various methods to achieve Android card switching effect, and one common approach is as follows:

  1. Create a card layout: Create a container in the XML layout file that contains cards, such as LinearLayout or FrameLayout.
  2. Create card view: Create a separate layout for each card in the XML layout file.
  3. Definition of card animation: use Android animation classes (e.g. ObjectAnimator or ValueAnimator) to define animation effects for card transitions, such as displacement, scaling, opacity, etc.
  4. Create a card switching method: Create a method in an Activity or Fragment that triggers a card switching animation. This method should adjust the visibility of the card layout as needed and apply predefined animation effects.
  5. Listen for card switch events: Depending on your needs, you can add listeners or callback methods to execute additional operations after the card switch is complete.

Here is a simple example code that implements a switching effect between two cards.

// 在 XML 布局文件中定义卡片容器和卡片视图
<LinearLayout
    android:id="@+id/cardContainer"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <LinearLayout
        android:id="@+id/card1"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@android:color/holo_blue_light"
        android:visibility="visible">

        <!-- 卡片1的内容 -->

    </LinearLayout>

    <LinearLayout
        android:id="@+id/card2"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@android:color/holo_green_light"
        android:visibility="gone">

        <!-- 卡片2的内容 -->

    </LinearLayout>

</LinearLayout>

// 在 Activity 或 Fragment 中实现卡片切换
private LinearLayout cardContainer;
private LinearLayout card1;
private LinearLayout card2;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    cardContainer = findViewById(R.id.cardContainer);
    card1 = findViewById(R.id.card1);
    card2 = findViewById(R.id.card2);
}

private void switchCard() {
    // 切换卡片的可见性
    if (card1.getVisibility() == View.VISIBLE) {
        card1.setVisibility(View.GONE);
        card2.setVisibility(View.VISIBLE);
    } else {
        card1.setVisibility(View.VISIBLE);
        card2.setVisibility(View.GONE);
    }

    // 定义卡片切换动画效果
    ObjectAnimator scaleXAnimator = ObjectAnimator.ofFloat(cardContainer, "scaleX", 0.8f, 1.0f);
    ObjectAnimator scaleYAnimator = ObjectAnimator.ofFloat(cardContainer, "scaleY", 0.8f, 1.0f);
    AnimatorSet animatorSet = new AnimatorSet();
    animatorSet.setDuration(500);
    animatorSet.playTogether(scaleXAnimator, scaleYAnimator);
    animatorSet.start();
}

To switch cards, simply call the switchCard() method to initiate the switching animation.

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