Android 表格行的淡出动画

发布于 2024-10-31 14:06:46 字数 696 浏览 0 评论 0原文

我有一个带有 TextView 的 TableRow。这是它的 xml。

<TableRow
    android:layout_height="fill_parent" 
    android:layout_gravity="bottom"
    android:layout_width="fill_parent"
    android:background="#BF000000">

    <TextView
        android:id="@+id/topText"
        android:layout_height="wrap_content"
        android:textColor="#FFFFFF"
        android:textSize="19sp"
        android:background="#BF000000"
        android:layout_gravity="center_horizontal"
        android:text="@string/text_searchword"
        android:layout_width="fill_parent">
    </TextView>

</TableRow>

我想通过按钮触摸时的淡出效果使表格行不可见，反之亦然。我该怎么做呢？

原文

I have a TableRow with a TextView. Here is the xml for it.

<TableRow
    android:layout_height="fill_parent" 
    android:layout_gravity="bottom"
    android:layout_width="fill_parent"
    android:background="#BF000000">

    <TextView
        android:id="@+id/topText"
        android:layout_height="wrap_content"
        android:textColor="#FFFFFF"
        android:textSize="19sp"
        android:background="#BF000000"
        android:layout_gravity="center_horizontal"
        android:text="@string/text_searchword"
        android:layout_width="fill_parent">
    </TextView>

</TableRow>

I want to make the table row invisible with fadeout effect on a button touch and vice versa. How can I do it?

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一场春暖 2024-11-07 14:06:46

任何View（包括TableRow）都可以附加淡入淡出动画，但您需要能够在代码中引用您的视图，因此该行需要一个id：

<TableRow
  android:id="@+id/my_row"
  android:layout_height="fill_parent" 
  android:layout_gravity="bottom"
  android:layout_width="fill_parent"
  android:background="#BF000000">
  <TextView
    android:id="@+id/topText"
    android:layout_height="wrap_content"
    android:textColor="#FFFFFF"
    android:textSize="19sp"
    android:background="#BF000000"
    android:layout_gravity="center_horizontal"
    android:text="@string/text_searchword"
    android:layout_width="fill_parent">
  </TextView>
</TableRow>

现在您可以在 Java 代码中的某处引用该行本身（也许是 onCreate()），请

View row = findViewById(R.id.my_row);

注意，我不会将其转换为 TableRow。如果您需要用它做其他事情，您可以，但仅设置可见性，将其保留为视图就可以了。然后只需构造一个按钮单击方法，如下所示：

public void onClick(View v) {
    View row = findViewById(R.id.myrow);
    if(row.getVisibility() == View.VISIBLE) {
        row.startAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_out));
        row.setVisibility(View.INVISIBLE);
    } else {
        row.startAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_in));
        row.setVisibility(View.VISIBLE);
    }
}

Fade in 和 Fade out 是 Android 包中定义的标准动画，您不需要自己创建它们，只需使用 AnimationUtils.loadAnimation() 加载它们即可。在此示例中，单击同一按钮只会在淡入和淡出之间切换，具体取决于视图是否已经可见。

希望有帮助！

Any View (TableRow included) can have a fade animation attached to it, but you'll need to be able to reference your view in code, so the row will need an id:

<TableRow
  android:id="@+id/my_row"
  android:layout_height="fill_parent" 
  android:layout_gravity="bottom"
  android:layout_width="fill_parent"
  android:background="#BF000000">
  <TextView
    android:id="@+id/topText"
    android:layout_height="wrap_content"
    android:textColor="#FFFFFF"
    android:textSize="19sp"
    android:background="#BF000000"
    android:layout_gravity="center_horizontal"
    android:text="@string/text_searchword"
    android:layout_width="fill_parent">
  </TextView>
</TableRow>

Now you can reference the row itself in your Java code somewhere (like onCreate() perhaps) as

View row = findViewById(R.id.my_row);

Notice I don't cast it as a TableRow. You could if you need to do other things with it, but for just setting visibility leaving it as a View is fine. Then just construct a button click method like this:

public void onClick(View v) {
    View row = findViewById(R.id.myrow);
    if(row.getVisibility() == View.VISIBLE) {
        row.startAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_out));
        row.setVisibility(View.INVISIBLE);
    } else {
        row.startAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_in));
        row.setVisibility(View.VISIBLE);
    }
}

Fade in and Fade out are standard animations defined in the Android package, you don't need to create them yourself, just load them using AnimationUtils.loadAnimation(). In this example, the clicking the same button just toggles between fade in and fade out depending on whether or not the View is already visible.

Hope that Helps!

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