package com.electric.chargingpile.iview;

import android.app.Activity;

import android.graphics.Rect;

import android.view.View;

import android.view.ViewTreeObserver;

public class SoftKeyBoardListener {

    private View rootView;  //activity的根视图

    int rootViewVisibleHeight;  //纪录根视图的显示高度

    private OnSoftKeyBoardChangeListener onSoftKeyBoardChangeListener;

    public SoftKeyBoardListener(Activity activity) {

        //获取activity的根视图

        rootView = activity.getWindow().getDecorView();

        //监听视图树中全局布局发生改变或者视图树中的某个视图的可视状态发生改变

        rootView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {

            @Override

            public void onGlobalLayout() {

                //获取当前根视图在屏幕上显示的大小

                Rect r = new Rect();

                rootView.getWindowVisibleDisplayFrame(r);

                int visibleHeight = r.height();

                System.out.println(""+visibleHeight);

                if (rootViewVisibleHeight == 0) {

                    rootViewVisibleHeight = visibleHeight;

                    return;

                }

                //根视图显示高度没有变化，可以看作软键盘显示／隐藏状态没有改变

                if (rootViewVisibleHeight == visibleHeight) {

                    return;

                }

                //根视图显示高度变小超过200，可以看作软键盘显示了

                if (rootViewVisibleHeight - visibleHeight > 200) {

                    if (onSoftKeyBoardChangeListener != null) {

                        onSoftKeyBoardChangeListener.keyBoardShow(rootViewVisibleHeight - visibleHeight);

                    }

                    rootViewVisibleHeight = visibleHeight;

                    return;

                }

                //根视图显示高度变大超过200，可以看作软键盘隐藏了

                if (visibleHeight - rootViewVisibleHeight > 200) {

                    if (onSoftKeyBoardChangeListener != null) {

                        onSoftKeyBoardChangeListener.keyBoardHide(visibleHeight - rootViewVisibleHeight);

                    }

                    rootViewVisibleHeight = visibleHeight;

                    return;

                }

            }

        });

    }

    private void setOnSoftKeyBoardChangeListener(OnSoftKeyBoardChangeListener onSoftKeyBoardChangeListener) {

        this.onSoftKeyBoardChangeListener = onSoftKeyBoardChangeListener;

    }

    public interface OnSoftKeyBoardChangeListener {

        void keyBoardShow(int height);

        void keyBoardHide(int height);

    }

    public static void setListener(Activity activity, OnSoftKeyBoardChangeListener onSoftKeyBoardChangeListener) {

        SoftKeyBoardListener softKeyBoardListener = new SoftKeyBoardListener(activity);

        softKeyBoardListener.setOnSoftKeyBoardChangeListener(onSoftKeyBoardChangeListener);

    }

}

                android:id="@+id/publish_video"

                    android:background="@drawable/app_publish_video_icon" />

                    android:text="视频"

                android:id="@+id/publish_picture"

                android:layout_centerHorizontal="true"

                    android:background="@drawable/app_publish_pic_icon" />

                    android:text="图文"

                    android:ellipsize="end"

                    android:ellipsize="end"

                    tools:text="#新能源#是的咖啡机圣诞快乐附件可是大家反馈律师费了十多斤风口浪尖水电费会计师了多费劲考虑送到" />

<?xml version="1.0" encoding="utf-8"?>

<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:background="#00f00f"

    android:layout_height="match_parent">

    <!-- 底部评论输入及发布 -->

    <android.support.constraint.ConstraintLayout

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:background="#535353"

        android:minHeight="54dp"

        app:layout_constraintBottom_toBottomOf="parent"

        app:layout_constraintEnd_toEndOf="parent"

        app:layout_constraintStart_toStartOf="parent">

        <android.support.constraint.ConstraintLayout

            android:id="@+id/bWriteComment"

            android:layout_width="0dp"

            android:layout_height="30dp"

            android:layout_marginLeft="15dp"

            android:background="@drawable/bg_comment_shape"

            app:layout_constraintBottom_toBottomOf="parent"

            app:layout_constraintLeft_toLeftOf="parent"

            app:layout_constraintRight_toLeftOf="@+id/dialogPublish"

            app:layout_constraintTop_toTopOf="parent">

            <ImageView

                android:id="@+id/dialogIcon"

                android:layout_width="wrap_content"

                android:layout_height="wrap_content"

                android:layout_marginStart="15dp"

                android:paddingRight="5dp"

                app:layout_constraintBottom_toBottomOf="parent"

                app:layout_constraintStart_toStartOf="parent"

                app:layout_constraintTop_toTopOf="parent"

                app:srcCompat="@drawable/write_comment_icon" />

            <EditText

                android:id="@+id/dialogEdit"

                android:background="@null"

                android:layout_width="0dp"

                android:layout_height="wrap_content"

                android:hint="优质评论会被优先展示"

                android:textColor="#ffffff"

                android:textColorHint="#7e7e7e"

                android:textSize="14sp"

                app:layout_constraintBottom_toBottomOf="parent"

                app:layout_constraintRight_toRightOf="parent"

                app:layout_constraintLeft_toRightOf="@+id/dialogIcon"

                app:layout_constraintTop_toTopOf="parent" />

        </android.support.constraint.ConstraintLayout>

        <TextView

            android:id="@+id/dialogPublish"

            android:layout_width="wrap_content"

            android:layout_height="0dp"

            android:gravity="center_vertical"

            android:paddingLeft="13dp"

            android:paddingRight="15dp"

            android:text="发布"

            android:textColor="#7e7e7e"

            android:textSize="14sp"

            app:layout_constraintBottom_toBottomOf="parent"

            app:layout_constraintRight_toRightOf="parent"

            app:layout_constraintTop_toTopOf="parent"

            tools:layout_editor_absoluteX="348dp"

            tools:layout_editor_absoluteY="19dp" />

    </android.support.constraint.ConstraintLayout>

</android.support.constraint.ConstraintLayout>

    <style name="BottomDialog" parent="@style/AppTheme">

        <item name="android:layout_width">match_parent</item>

        <item name="android:layout_height">wrap_content</item>

        <item name="android:windowIsFloating">true</item>

        <item name="android:windowSoftInputMode">stateAlwaysVisible</item><!--显示软件盘-->

    </style>