Android实现从底部弹出的Dialog的实例代码

Dialog dialog = new Dialog(context, R.style.ActionSheetDialogStyle);
    //填充对话框的布局
    inflate = LayoutInflater.from(context).inflate(R.layout.dialog_layout, null);
    // setCancelable(iscancelable);//点击外部不可dismiss
    //setCanceledOnTouchOutside(isBackCanCelable);
    //初始化控件
    spinner = (Spinner) inflate.findViewById(R.id.sp);
    beizhu = (TextView) inflate.findViewById(R.id.beizhu);
    btn_cancel = (Button) inflate.findViewById(R.id.btn_cancel);
    btn_ok = (Button) inflate.findViewById(R.id.btn_ok);
    //将布局设置给Dialog
    taskProgress.setContentView(inflate);
    //获取当前Activity所在的窗体
    Window dialogWindow = taskProgress.getWindow();
    //设置Dialog从窗体底部弹出
    dialogWindow.setGravity(Gravity.BOTTOM);
    //获得窗体的属性
    WindowManager.LayoutParams lp = dialogWindow.getAttributes();
    //如果没有这行代码，弹框的内容会自适应，而不会充满父控件
    lp.width = WindowManager.LayoutParams.MATCH_PARENT;
    lp.y = 40;//设置Dialog距离底部的距离
    //将属性设置给窗体
    dialogWindow.setAttributes(lp);
    dialog .show();//显示对话框
    在需要消失地方直接
    dialog.dismiss();

<style name="ActionSheetDialogStyle" parent="@android:style/Theme.Dialog">

  <!-- 背景透明 -->
  <item name="android:windowBackground">@android:color/transparent</item>
  <item name="android:windowContentOverlay">@null</item>
  <!-- 浮于Activity之上 -->
  <item name="android:windowIsFloating">true</item>
  <!-- 边框 -->
  <item name="android:windowFrame">@null</item>
  <!-- Dialog以外的区域模糊效果 -->
  <item name="android:backgroundDimEnabled">true</item>
  <!-- 无标题 -->
  <item name="android:windowNoTitle">true</item>
  <!-- 半透明 -->
  <item name="android:windowIsTranslucent">true</item>
  <!-- Dialog进入及退出动画 -->
  <item name="android:windowAnimationStyle">@style/ActionSheetDialogAnimation</item>
 </style>
 <!-- ActionSheet进出动画 -->
 <style name="ActionSheetDialogAnimation" parent="@android:style/Animation.Dialog">
  <item name="android:windowEnterAnimation">@anim/actionsheet_dialog_in</item>
  <item name="android:windowExitAnimation">@anim/actionsheet_dialog_out</item>
 </style>

<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
 android:duration="200"
 android:fromYDelta="100%"
 android:toYDelta="0" />

<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
 android:duration="200"
 android:fromYDelta="0"
 android:toYDelta="100%" />

<?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:id="@+id/activity_task_progress"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:gravity="center"
 android:orientation="vertical">
 <LinearLayout
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:layout_margin="20dp"
  android:background="@drawable/lin_style"
  android:gravity="center_vertical"
  android:orientation="vertical">
  <LinearLayout
   android:layout_width="match_parent"
   android:layout_height="wrap_content"
   android:layout_margin="20dp"
   android:layout_marginLeft="10dp"
   android:layout_marginRight="10dp"
   android:orientation="horizontal">
   <TextView
    android:layout_width="0dp"
    android:layout_height="match_parent"
    android:layout_weight="1"
    android:gravity="center"
    android:text="任务进度"
    android:textSize="17sp" />
   <Spinner
    android:id="@+id/sp"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_weight="2"></Spinner>
  </LinearLayout>
  <LinearLayout
   android:layout_width="match_parent"
   android:layout_height="wrap_content"
   android:layout_marginBottom="10dp"
   android:layout_marginTop="20dp"
   android:focusable="true"
   android:focusableInTouchMode="true"
   android:orientation="horizontal">
   <TextView
    android:layout_width="0dp"
    android:layout_height="match_parent"
    android:layout_weight="1"
    android:gravity="center"
    android:text="备注"
    android:textSize="17sp" />
   <EditText
    android:id="@+id/beizhu"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_weight="2"
    android:hint="请输入备注" />
  </LinearLayout>
 </LinearLayout>
 <LinearLayout
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:layout_marginBottom="10dp"
  android:layout_marginTop="5dp"
  android:orientation="horizontal">
  <Button
   android:id="@+id/btn_cancel"
   android:layout_width="0dp"
   android:layout_height="wrap_content"
   android:layout_gravity="center_vertical"
   android:layout_marginLeft="50dp"
   android:layout_marginRight="50dp"
   android:layout_weight="1"
   android:background="@drawable/button_style"
   android:minHeight="0dp"
   android:minWidth="0dp"
   android:paddingBottom="8dp"
   android:paddingLeft="10dp"
   android:paddingRight="10dp"
   android:paddingTop="8dp"
   android:text="取消"
   android:textColor="#fff" />
  <Button
   android:id="@+id/btn_ok"
   android:layout_width="0dp"
   android:layout_height="wrap_content"
   android:layout_gravity="center_vertical"
   android:layout_marginLeft="50dp"
   android:layout_marginRight="50dp"
   android:layout_weight="1"
   android:background="@drawable/button_style"
   android:minHeight="0dp"
   android:minWidth="0dp"
   android:paddingBottom="8dp"
   android:paddingLeft="10dp"
   android:paddingRight="10dp"
   android:paddingTop="8dp"
   android:text="确定"
   android:textColor="#fff" />
 </LinearLayout>
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
 <corners android:radius="10dp"></corners>
 <solid android:color="#fff" />
</shape>

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
 <corners android:radius="5dp"></corners>
 <solid android:color="#46b5e9" />
</shape>