自定义Android Toast中的按钮？

Question

是否可以在Toast中使用按钮？

从理论上讲,是的,因为您可以使用XML中的布局构建自定义Toast,但我尝试在其中放置一个按钮,但无法使其注册单击.有没有人设法做那样的事情？

Answer 1

无法点击敬酒.无法在Toast消息中捕获单击.您需要为此构建一个对话框.再看建立对话框的更多信息.

Toast类上的API 声明toast永远不会收到焦点,因为toast不是视图,所以没有onClick消息.我认为因此也不能点击Toast的孩子.

Answer 2

吐司不能包含按钮.除了果冻豆的gmail应用程序和图库应用程序都有一个包含按钮的半烤面包,Google就是这样做的

https://gist.github.com/benvd/4090998

我想这可以回答你的问题.

Answer 3

Snippet显示了自定义Toast的实现:

• 与原始Toast类有相似的界面
• 可以用作Dialog(具有Gmail应用程序等可点击按钮)
• 有可能设置length在millis
• 有可能设置显示和取消动画
• 只有初始化才能生存 Activity

目前的限制:

• 不支持屏幕方向更改

用法:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    //...

    View toastView = new View(getBaseContext());
    //init your toast view

    ActivityToast toast = new ActivityToast(this, toastView);

    //set toast Gravity ( Gravity.BOTTOM | Gravity.FILL_HORIZONTAL by default)
    toast.setGravity(Gravity.CENTER);

    toast.setLength(10000); //set toast show duration to 10 seconds (2 seconds by default)

    Animation showAnim; // init animation
    Animation.AnimationListener showAnimListener; //init anim listener
    toast.setShowAnimation(showAnim);
    toast.setShowAnimationListener(showAnimListener);

    Animation cancelAnim; // init animation
    Animation.AnimationListener cancelAnimListener; //init anim listener
    toast.setCancelAnimation(showAnim);
    toast.setCancelAnimationListener(showAnimListener);

    toast.show(); //show toast view
    toast.isShowing(); // check if toast is showing now
    toast.cancel(); //cancel toast view

    toast.getView(); //get toast view to update it or to do something ..
}

来源

import android.app.Activity;
import android.os.Handler;
import android.support.annotation.NonNull;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.widget.FrameLayout;

public class ActivityToast {

    public static final long LENGTH_SHORT = 2000;
    public static final long LENGTH_LONG = 3000;
    public static final int DEFAULT_ANIMATION_DURATION = 400;

    private final Activity mActivity;
    private FrameLayout.LayoutParams mLayoutParams;

    private Handler mHandler = new Handler();

    private ViewGroup mParent;
    private FrameLayout mToastHolder;
    private View mToastView;

    private Animation mShowAnimation;
    private Animation mCancelAnimation;

    private long mLength = LENGTH_SHORT;

    private Animation.AnimationListener mShowAnimationListener;
    private Animation.AnimationListener mCancelAnimationListener;

    private boolean mIsAnimationRunning;
    private boolean mIsShown;

    /**
     * @param activity Toast will be shown at top of the widow of this Activity
     */
    public ActivityToast(@NonNull Activity activity, View toastView) {
        mActivity = activity;

        mParent = (ViewGroup) activity.getWindow().getDecorView();
        mToastHolder = new FrameLayout(activity.getBaseContext());
        mLayoutParams = new FrameLayout.LayoutParams(
                ViewGroup.LayoutParams.WRAP_CONTENT,
                ViewGroup.LayoutParams.WRAP_CONTENT,
                Gravity.BOTTOM | Gravity.FILL_HORIZONTAL
        );
        mToastHolder.setLayoutParams(mLayoutParams);

        mShowAnimation = new AlphaAnimation(0.0f, 1.0f);
        mShowAnimation.setDuration(DEFAULT_ANIMATION_DURATION);
        mShowAnimation.setAnimationListener(mHiddenShowListener);

        mCancelAnimation = new AlphaAnimation(1.0f, 0.0f);
        mCancelAnimation.setDuration(DEFAULT_ANIMATION_DURATION);
        mCancelAnimation.setAnimationListener(mHiddenCancelListener);

        mToastView = toastView;
        mToastHolder.addView(mToastView);

        mToastHolder.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View view, MotionEvent motionEvent) {
                if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) {
                    cancel();
                }
                return false;
            }
        });
    }

    public void show() {
        if (!isShowing()) {
            mParent.addView(mToastHolder);
            mIsShown = true;

            if (mShowAnimation != null) {
                mToastHolder.startAnimation(mShowAnimation);
            } else {
                mHandler.postDelayed(mCancelTask, mLength);
            }
        }
    }

    public void cancel() {
        if (isShowing() && !mIsAnimationRunning) {
            if (mCancelAnimation != null) {
                mToastHolder.startAnimation(mCancelAnimation);
            } else {
                mParent.removeView(mToastHolder);
                mHandler.removeCallbacks(mCancelTask);
                mIsShown = false;
            }
        }
    }

    public boolean isShowing() {
        return mIsShown;
    }

    /**
     * Pay attention that Action bars is the part of Activity window
     *
     * @param gravity Position of view in Activity window
     */

    public void setGravity(int gravity) {
        mLayoutParams.gravity = gravity;

        if (isShowing()) {
            mToastHolder.requestLayout();
        }
    }

    public void setShowAnimation(Animation showAnimation) {
        mShowAnimation = showAnimation;
    }

    public void setCancelAnimation(Animation cancelAnimation) {
        mCancelAnimation = cancelAnimation;
    }

    /**
     * @param cancelAnimationListener cancel toast animation. Note: you should use this instead of
     *                                Animation.setOnAnimationListener();
     */
    public void setCancelAnimationListener(Animation.AnimationListener cancelAnimationListener) {
        mCancelAnimationListener = cancelAnimationListener;
    }

    /**
     * @param showAnimationListener show toast animation. Note: you should use this instead of
     *                              Animation.setOnAnimationListener();
     */
    public void setShowAnimationListener(Animation.AnimationListener showAnimationListener) {
        mShowAnimationListener = showAnimationListener;
    }

    public void setLength(long length) {
        mLength = length;
    }

    public View getView() {
        return mToastView;
    }

    private Runnable mCancelTask = new Runnable() {
        @Override
        public void run() {
            cancel();
        }
    };

    private Animation.AnimationListener mHiddenShowListener = new Animation.AnimationListener() {
        @Override
        public void onAnimationStart(Animation animation) {
            if (mShowAnimationListener != null) {
                mShowAnimationListener.onAnimationStart(animation);
            }

            mIsAnimationRunning = true;
        }

        @Override
        public void onAnimationEnd(Animation animation) {
            mHandler.postDelayed(mCancelTask, mLength);

            if (mShowAnimationListener != null) {
                mShowAnimationListener.onAnimationEnd(animation);
            }

            mIsAnimationRunning = false;
        }

        @Override
        public void onAnimationRepeat(Animation animation) {
            if (mShowAnimationListener != null) {
                mShowAnimationListener.onAnimationRepeat(animation);
            }
        }
    };

    private Animation.AnimationListener mHiddenCancelListener = new Animation.AnimationListener() {
        @Override
        public void onAnimationStart(Animation animation) {
            if (mCancelAnimationListener != null) {
                mCancelAnimationListener.onAnimationStart(animation);
            }

            mIsAnimationRunning = true;
        }

        @Override
        public void onAnimationEnd(Animation animation) {
            mParent.removeView(mToastHolder);
            mHandler.removeCallbacks(mCancelTask);

            if (mCancelAnimationListener != null) {
                mCancelAnimationListener.onAnimationEnd(animation);
            }

            mIsAnimationRunning = false;
            mIsShown = false;
        }

        @Override
        public void onAnimationRepeat(Animation animation) {
            if (mCancelAnimationListener != null) {
                mCancelAnimationListener.onAnimationRepeat(animation);
            }
        }
    };
}

我在github Post 上的原帖
,显示了这篇文章中自定义布局的实现

Answer 4

传递给 toast 的自定义视图可以包含任何内容；但是，toast 无法接收任何触摸事件，因此使用触摸事件的组件将无法在常用 toast（按钮、单选按钮等）中工作。您唯一的选择是创建一个带有按钮的自定义视图并将其添加到您的布局中。有很多示例说明如何执行此操作，您可以查看一些库以了解其他人是如何执行此操作的。

UndoBar
MessageBar
Nurik 的 UndoBar

当然，也欢迎您使用我放在一起的SuperToasts库，但是对于一次使用来说可能有点矫枉过正。SuperActivityToast类中概述了我的做法。