添加按钮到SlidingDrawer句柄?

时间:2011-04-14 16:50:49

标签: android onclick slidingdrawer

我一直在研究这个问题。想法开始很简单,我想在SlidingDrawer句柄上有一个按钮,允许用户查看特定于抽屉内容的设置。所以我做了一个布局,侧面有一个按钮,并将其设置为手柄。抽屉拉得很好,但是不允许按下按钮(在把手上)。当我尝试点击该东西时,点击被解释为手柄点击,并切换抽屉的状态。

有谁知道最近发生了什么?

谢谢~Aedon

4 个答案:

答案 0 :(得分:13)

我会发布我的实施,以拯救他人的麻烦。

你基本上必须扩展SlidingDrawer类并处理onInterceptTouch事件,当它们位于句柄布局内的项目之上时会通过。

这假设您正在为句柄使用ViewGroup(例如任何布局),并且其中的所有视图都是可单击的。

import android.content.Context;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.SlidingDrawer;

public class ClickableSlidingDrawer extends SlidingDrawer {

    private ViewGroup mHandleLayout;
    private final Rect mHitRect = new Rect();

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

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



    @Override
    protected void onFinishInflate() {
        super.onFinishInflate();

        View handle = getHandle();

        if (handle instanceof ViewGroup) {
            mHandleLayout = (ViewGroup) handle;
        }
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent event) {
        if (mHandleLayout != null) {
            int childCount = mHandleLayout.getChildCount();
            int handleClickX = (int)(event.getX() - mHandleLayout.getX());
            int handleClickY = (int)(event.getY() - mHandleLayout.getY());

            Rect hitRect = mHitRect;

            for (int i=0;i<childCount;i++) {
                View childView = mHandleLayout.getChildAt(i);
                childView.getHitRect(hitRect);

                if (hitRect.contains(handleClickX, handleClickY)) {
                    return false;
                }
            }
        }

        return super.onInterceptTouchEvent(event);
    }
}

然后,在您的布局中.xml只使用<my.package.name.ClickableSlidingDrawer>而不是<SlidingDrawer>

答案 1 :(得分:13)

我尝试了d4n3的实现,但由于我的句柄包含一个嵌套在多个ViewGroup内的按钮,我不得不修改它以使其工作。

我的实现还假设您使用ViewGroup作为句柄,但子视图不必是可点击的。此外,您必须将tag设置为您希望在句柄中可单击的视图的“ click_intercepted ”。只有具有此特定标记集的子视图才会被视为句柄内的点击。这样,您可以随意布置句柄,并且仍然可以对句柄中特定View(例如Button)的点击进行适当操作。此外,通过此实现,您仍然可以拖动并单击手柄以切换其状态。

import android.content.Context;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.SlidingDrawer;

public class ClickableSlidingDrawer extends SlidingDrawer
{
    private static final String TAG_CLICK_INTERCEPTED = "click_intercepted";

    private ViewGroup mHandleLayout;
    private final Rect mHitRect = new Rect();

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

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

    @Override
    protected void onFinishInflate()
    {
        super.onFinishInflate();

        View handle = getHandle();

        if (handle instanceof ViewGroup)
        {
            mHandleLayout = (ViewGroup) handle;
        }
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent event)
    {
        if (mHandleLayout != null)
        {
            int clickX = (int) (event.getX() - mHandleLayout.getLeft());
            int clickY = (int) (event.getY() - mHandleLayout.getTop());

            if (isAnyClickableChildHit(mHandleLayout, clickX, clickY))
            {
                return false;
            }
        }
        return super.onInterceptTouchEvent(event);
    }

    private boolean isAnyClickableChildHit(ViewGroup viewGroup, int clickX, int clickY)
    {
        for (int i = 0; i < viewGroup.getChildCount(); i++)
        {
            View childView = viewGroup.getChildAt(i);

            if (TAG_CLICK_INTERCEPTED.equals(childView.getTag()))
            {
                childView.getHitRect(mHitRect);

                if (mHitRect.contains(clickX, clickY))
                {
                    return true;
                }
            }

            if (childView instanceof ViewGroup && isAnyClickableChildHit((ViewGroup) childView, clickX, clickY))
            {
                return true;
            }
        }
        return false;
    }
}

答案 2 :(得分:5)

您可以使用布局XML中SlidingDrawer元素中的属性来禁止将句柄按钮上的单击解释为“打开”的操作。像这样:

<SlidingDrawer android:layout_width="fill_parent"android:id="@+id/SlidingDrawer" android:handle="@+id/slideHandleButton"
                    android:content="@+id/txtHolder" android:layout_height="fill_parent"
                    android:orientation="horizontal" android:allowSingleTap="false">

只需创建android:allowSingleTap="false"然后像往常一样为按钮实现点击处理程序。这将阻止它打开/关闭抽屉,但您可能需要截取按钮的事件以使其按照您的要求执行操作。

答案 3 :(得分:0)

首先制作一个布局并将Handle内容放入其中(比如你放入handle_content.xml)。

第二次用这个替换你当前的句柄handle

<include android:id="@id/handle" 
android:layout="@layout/handle_content.xml"/>

现在按照以下步骤进行操作(我说这是因为如果你按照以上方式正常工作,

这是我的实施:

package com.examples.my.views;

import android.content.Context;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.widget.SlidingDrawer;

import com.examples.my.MainFragmentActivity;

public class MYSlidingDrawer extends SlidingDrawer {

    private View button;
    private int height;
    private MainFragmentActivity activity;

    public MYSlidingDrawer (Context context, AttributeSet attrs) {
        super(context, attrs);
        DisplayMetrics metrics = this.getResources().getDisplayMetrics();
        height = metrics.heightPixels;
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        // TODO Auto-generated method stub
        int left = button.getLeft();
        int top = button.getTop();
        int right = button.getRight();
        int bottom = button.getBottom();
        Rect rect = new Rect(left, top, right, bottom);
        int x = (int) event.getX();
        int y = (int) event.getY();
        if (isOpened()) {
            if (rect.contains(x, y)) {
                if (event.getAction() == MotionEvent.ACTION_UP) {
                    if (activity != null)
                        {
                         //HERE DO YOUR WORK
                         // Like activity.tooglePlay();
                        }

                }
                return true;
            }
        } else {
            y -= height;
            if (rect.contains(x, Math.abs(y))) {
                if (event.getAction() == MotionEvent.ACTION_UP) {
                    if (activity != null)
                         {
                          //HERE DO YOUR WORK
                          // Like activity.tooglePlay();
                          }
                }
                return true;
            }
        }
        return super.onTouchEvent(event);
    }

    public void setButton(View button) {
        this.button = button;
    }

    public void setActivity(MainFragmentActivity activity) {
        this.activity = activity;
    }

}

现在定义一下你在其中包含MYSlidingDrawer:

        MYSlidingDrawer drawer = (MYSlidingDrawer) findViewById(R.id.drawer);
        drawer.setActivity(this);
        Button btn = (Button) findViewById(R.id.play_btn);//button inside your handle
        drawer.setButton(btn);

希望这对你有所帮助。