从底部弹出Dialog窗口

效果图

总体结构

dialog_enter.xml //dialog的进入动画

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <translate
        android:duration="300"
        android:fromYDelta="100%"
        android:toYDelta="0%" />
</set>

dialog_exit.xml //dialog的退出动画

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <translate
        android:duration="300"
        android:fromYDelta="00%"
        android:toYDelta="100%" />
</set>

lay_share.xml //dialog的布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/background_light"
    android:orientation="vertical">
    <TextView
        android:id="@+id/cityName"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="?attr/colorButtonNormal"
        android:gravity="fill_vertical|center_horizontal"
        android:paddingBottom="10dp"
        android:paddingTop="10dp"
        android:text="@string/cityName"
        android:textSize="20dp" />
    <TextView
        android:id="@+id/tv_cancel"

        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:text="取消"
        android:textSize="24dp" />
</LinearLayout>

style.xml // 控制dialog布局Theme,控制弹出框的开关

<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>

    <!--弹出框动画-->
         <style name="share_animation" parent="android:Animation">
             <item name="android:windowEnterAnimation">@anim/dialog_enter</item>
             <item name="android:windowExitAnimation">@anim/dialog_exit</item>
         </style>

    <!-- 对话框样式 -->
    <style name="dialog_bottom_full" parent="android:style/Theme.Dialog">
        <item name="android:windowBackground">@android:color/transparent</item>
        <item name="android:windowNoTitle">true</item>
        <item name="android:windowIsFloating">true</item>
        <item name="android:windowContentOverlay">@null</item>
        <item name="android:scrollHorizontally">true</item>
    </style>
</resources>

activity_main.xml //初始布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/button"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Button"
        android:onClick="showDialog"
 />
</LinearLayout>

MainActivity.java

package com.example.tnt.dialogfrombottom;

import android.app.Dialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Gravity;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;

public class MainActivity extends AppCompatActivity {

    private Dialog mShareDialog;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
    //按钮 单击事件
    public void btnShowDialog(View view) {
        showDialog();// 单击按钮后 调用显示视图的 showDialog 方法，
    }

    /**
     * 显示弹出框
     */
    private void showDialog() {
        if (mShareDialog == null) {
            initShareDialog();
        }
        mShareDialog.show();
    }
    /**
     * 初始化分享弹出框
     */
    private void initShareDialog() {
        mShareDialog = new Dialog(this, R.style.dialog_bottom_full);
        mShareDialog.setCanceledOnTouchOutside(true); //手指触碰到外界取消
        mShareDialog.setCancelable(true);             //可取消 为true
        Window window = mShareDialog.getWindow();      // 得到dialog的窗体
        window.setGravity(Gravity.BOTTOM);
        window.setWindowAnimations(R.style.share_animation);

        View view = View.inflate(this, R.layout.lay_share, null); //获取布局视图
        view.findViewById(R.id.tv_cancel).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (mShareDialog != null && mShareDialog.isShowing()) {
                    mShareDialog.dismiss();
                }
            }
        });
        window.setContentView(view);
        window.setLayout(WindowManager.LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.WRAP_CONTENT);//设置横向全屏
    }
}