Java 如何在android ScrollView 上禁用和启用滚动？

How to disable and enable the scrolling on android ScrollView?

提问by Prosanto

I am a android developer.I also want to use a ScrollView.This ScrollView need to some time disable scrolling and Some time enable scrolling .But i can no able to disable the scrolling .How to i implement it .Please help to me.I also try to use the some code such a s

我是 android 开发人员。我也想使用 ScrollView。这个 ScrollView 需要一些时间禁用滚动和一些时间启用滚动。但我无法禁用滚动。如何实现它。请帮助我。我还尝试使用一些代码，例如

fullparentscrolling.setHorizontalFadingEdgeEnabled(false);
fullparentscrolling.setVerticalFadingEdgeEnabled(false);

or

或者

 fullparentscrolling.setEnabled(false);

But it does not work.

但它不起作用。

采纳答案by Biraj Zalavadia

Try this way

试试这个方法

Create Your CustomScrollview like this

像这样创建您的自定义滚动视图

import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.widget.ScrollView;

public class CustomScrollView extends ScrollView {

    private boolean enableScrolling = true;

    public boolean isEnableScrolling() {
        return enableScrolling;
    }

    public void setEnableScrolling(boolean enableScrolling) {
        this.enableScrolling = enableScrolling;
    }

    public CustomScrollView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    public CustomScrollView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public CustomScrollView(Context context) {
        super(context);
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {

        if (isEnableScrolling()) {
            return super.onInterceptTouchEvent(ev);
        } else {
            return false;
        }
    }
    @Override
    public boolean onTouchEvent(MotionEvent ev) {
       if (isEnableScrolling()) {
            return super.onTouchEvent(ev);
       } else {
           return false;
       }
}
}

In your xml

在你的 xml

// "com.example.demo" replace with your packagename

// "com.example.demo" 替换为你的包名

<com.example.demo.CustomScrollView
        android:id="@+id/myScroll"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >
    </com.example.demo.CustomScrollView>

In your Activity

在您的活动中

CustomScrollView myScrollView = (CustomScrollView) findViewById(R.id.myScroll);
        myScrollView.setEnableScrolling(false); // disable scrolling
        myScrollView.setEnableScrolling(true); // enable scrolling

回答by silvia_aut

Try this, this will disable the scroll function.

试试这个，这将禁用滚动功能。

scrollview.setEnabled(false);

回答by Hamad

You cannot disable the scrolling of a ScrollView. You would need to extend to ScrollView and override the onTouchEvent method to return false when some condition is matched.

您不能禁用 ScrollView 的滚动。您需要扩展到 ScrollView 并覆盖 onTouchEvent 方法以在匹配某些条件时返回 false。

You could modify ScrollView as follows to disable scrolling

您可以按如下方式修改 ScrollView 以禁用滚动

class LockableScrollView extends ScrollView {

    ...

    // true if we can scroll (not locked)
    // false if we cannot scroll (locked)
    private boolean mScrollable = true;

    public void setScrollingEnabled(boolean enabled) {
        mScrollable = enabled;
    }

    public boolean isScrollable() {
        return mScrollable;
    }

    @Override
    public boolean onTouchEvent(MotionEvent ev) {
        switch (ev.getAction()) {
            case MotionEvent.ACTION_DOWN:
                // if we can scroll pass the event to the superclass
                if (mScrollable) return super.onTouchEvent(ev);
                // only continue to handle the touch event if scrolling enabled
                return mScrollable; // mScrollable is always false at this point
            default:
                return super.onTouchEvent(ev);
        }
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        // Don't do anything with intercepted touch events if 
        // we are not scrollable
        if (!mScrollable) return false;
        else return super.onInterceptTouchEvent(ev);
    }

}

for furthe reference here is the complete solution on stack overflow too! Disable ScrollView Programmatically?

为了进一步参考，这里也是堆栈溢出的完整解决方案！ 以编程方式禁用 ScrollView？

mark this as answer for others help..thank you

将此标记为其他帮助的答案..谢谢

回答by themobius

I set the on touch listener for the scroll view and in the onTouch method i returend true. That did the trick for me.

我为滚动视图设置了触摸监听器，并在 onTouch 方法中返回 true。这对我有用。

mScrollView.setOnTouchListener( new OnTouchListener() {

            @Override
            public boolean onTouch(View v, MotionEvent event) 
            {
                  return true;
            }
});

Best for all

最适合所有人