android - 单击textview时显示水平scrollview

时间:2017-01-31 18:40:44

标签: android horizontal-scrolling

我是android的新手。我正在开发一款应用。我的标题为textView,内容为horizontal_scroll_view。现在,当我按下textView时,我需要horizontal_scroll_view来弹出标题。

XML布局 -

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:paddingLeft="20dp"
                android:paddingStart="20dp"
                android:onClick="DailyUseItems"
                android:clickable="true"
                android:text="Daily Use Products"
                android:textColor="#FFFFFF"
                android:textSize="24sp" />



        <HorizontalScrollView xmlns:android="http://schemas.android.com/apk/res/android"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="#EEEEEE"
            android:id="@+id/daily_use_items"
            android:scrollbars="none">
        </HorizontalScrollView>

1 个答案:

答案 0 :(得分:0)

如果您希望将其显示为弹出窗口,则可以进行自定义对话https://developer.android.com/guide/topics/ui/dialogs.html但是如果您想使Horizo​​ntalScrollView不可见并使其在标题点击时可见,您可以设置为xml android:visibility="invisible"或{{ 1}}然后在java中单击监听器android:visibility="gone"要使其弹出/向下滑动标题,您需要使用android动画。基于此代码https://gist.github.com/rafali/5146957

,我将按照以下方式执行此操作

MainActivity.class

horizontalScrollView.setVisibility(View.VISIBLE);

ResizeAnimation.class

public class MainActivity extends AppCompatActivity {

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

    final HorizontalScrollView hsc = (HorizontalScrollView) findViewById(R.id.daily_use_items);
    TextView tv = (TextView) findViewById(R.id.header);

    hsc.setAlpha(0.0f);

    tv.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            hsc.animate().alpha(1.0f);
            ResizeAnimation resizeAnimation = new ResizeAnimation(hsc,hsc.getHeight());
            resizeAnimation.setDuration(600);
            hsc.startAnimation(resizeAnimation);
        }
    });
}
}