画廊活动"以图像为中心"

Mar*_*los 7 events android scroll gallery coverflow

我正在创建一个可滚动的图像选择器,但有一些信息我希望在每个图像中显示时,我的问题是,在Gallery上有一个事件通知我图像居中?滚动时应该发生此事件.

我的布局是这样的:

    <Gallery android:id="@+id/coverflow"
        android:layout_width="match_parent" android:layout_height="wrap_content"
        android:layout_centerInParent="true" />
    <TextView android:id="@+id/author" android:layout_width="match_parent"
        android:layout_height="wrap_content" android:text="Titulo livro"
        android:layout_above="@id/coverflow" android:gravity="center" />

    <ImageView android:id="@+id/div" android:layout_width="match_parent"
        android:layout_height="wrap_content" android:src="@drawable/library_div"
        android:layout_above="@id/author" />

    <TextView android:id="@+id/title" android:layout_width="match_parent"
        android:layout_height="wrap_content" android:text="Author"
        android:layout_above="@id/div" android:gravity="center" />
</RelativeLayout>
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我想在滚动发生时,新的iten是中间的,作者和标题TextViews得到更新.

有小费吗?

Mar*_*los 10

其实我找到了:

coverflow.setCallbackDuringFling(true);
        coverflow.setOnItemSelectedListener(new OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> arg0, View arg1,
                    int arg2, long arg3) {
                Toast.makeText(LibraryActivity.this, "SELECTING "+arg2, Toast.LENGTH_SHORT).show();             
            }

            @Override
            public void onNothingSelected(AdapterView<?> arg0) {
                Toast.makeText(LibraryActivity.this, "NOTHING", Toast.LENGTH_SHORT).show();             
            }
        });
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