Android实现底部弹出的对话框功能

环境：

1. 主机:win10
2. 开发环境:android studio 2.2 preview 3

说明：
两种方法实现底部弹出的对话框：

1. dialog
2. dialogfragment

推荐用dialogfragment

效果图：

布局文件dialog_select_call.xml：

<?xml version="1.0" encoding="utf-8"?> 
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android" 
  android:orientation="vertical" android:layout_width="match_parent" 
  android:layout_height="match_parent"> 
 
  <relativelayout 
    android:id="@+id/layout_voice" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:background="@color/white"> 
 
    <textview 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_alignparentstart="true" 
      android:layout_centerinparent="true" 
      android:textsize="16sp" 
      android:textcolor="@color/black" 
      android:layout_marginleft="16dp" 
      android:layout_marginright="16dp" 
      android:layout_margintop="16dp" 
      android:layout_marginbottom="16dp" 
      android:text="语音课堂"/> 
  </relativelayout> 
 
  <view 
    android:layout_width="fill_parent" 
    android:layout_height="0.1dp" 
    android:background="#b4b4b4" 
    android:layout_marginleft="16dp" 
    android:layout_marginright="16dp"/> 
 
  <relativelayout 
    android:id="@+id/layout_video" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:background="@color/white"> 
 
    <textview 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_alignparentstart="true" 
      android:layout_centerinparent="true" 
      android:textsize="16sp" 
      android:textcolor="@color/black" 
      android:layout_marginleft="16dp" 
      android:layout_marginright="16dp" 
      android:layout_margintop="16dp" 
      android:layout_marginbottom="16dp" 
      android:text="视频课堂"/> 
  </relativelayout> 
 
  <view 
    android:layout_width="fill_parent" 
    android:layout_height="0.1dp" 
    android:background="#b4b4b4" 
    android:layout_marginleft="16dp" 
    android:layout_marginright="16dp"/> 
 
  <relativelayout 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:background="@color/white"> 
 
    <button 
      android:id="@+id/cancel" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:text="取消" 
      android:layout_marginleft="16dp" 
      android:layout_marginright="16dp" 
      android:layout_margintop="16dp" 
      android:layout_marginbottom="16dp"/> 
  </relativelayout> 
 
</linearlayout> 

dialog实现源码：

初始化：

private void dialogselectcallinit() { 
    dialogselectcall = new dialog(this, r.style.dialogpopbottom); 
    view inflate = layoutinflater.from(this).inflate(r.layout.dialog_select_call, null); 
    dialogselectcall.setcontentview(inflate); 
 
    window dialogwindow = dialogselectcall.getwindow(); 
    dialogwindow.setgravity(gravity.bottom); 
 
    windowmanager.layoutparams lp = dialogwindow.getattributes(); 
    lp.x = 0; 
    lp.y = 0; 
    lp.width = getresources().getdisplaymetrics().widthpixels; 
    dialogwindow.setattributes(lp); 
 
    relativelayout layoutvoice = (relativelayout) inflate.findviewbyid(r.id.layout_voice); 
    relativelayout layoutvideo = (relativelayout) inflate.findviewbyid(r.id.layout_video); 
    button buttoncancel = (button) inflate.findviewbyid(r.id.cancel); 
 
    rxview.clicks(layoutvoice) 
        .throttlefirst(2, timeunit.seconds) 
        .compose(this.binduntilevent(activityevent.destroy)) 
        .subscribe(v -> { 
//          dialogselectcall.cancel(); 
          voicesessionactivity.startactivitycallout(this, userid); 
        }); 
 
    rxview.clicks(layoutvideo) 
        .throttlefirst(2, timeunit.seconds) 
        .compose(this.binduntilevent(activityevent.destroy)) 
        .subscribe(v -> { 
//          dialogselectcall.cancel(); 
//          videosessionactivity.startactivitycallout(this, userid); 
        }); 
 
    rxview.clicks(buttoncancel) 
        .throttlefirst(2, timeunit.seconds) 
        .compose(this.binduntilevent(activityevent.destroy)) 
        .subscribe(v -> dialogselectcall.cancel()); 
 
    rxview.touches(layoutvoice, motionevent -> { 
      deallayouttouch(layoutvoice, motionevent); 
      return false; 
    }).compose(this.binduntilevent(activityevent.destroy)).subscribe(motionevent -> {}); 
 
    rxview.touches(layoutvideo, motionevent -> { 
      deallayouttouch(layoutvideo, motionevent); 
      return false; 
    }).compose(this.binduntilevent(activityevent.destroy)).subscribe(motionevent -> {}); 
  } 
 
  private void deallayouttouch(view v, motionevent event) { 
    switch (event.getaction()) { 
      case motionevent.action_down: 
        v.setbackgroundcolor(color.rgb(200, 200, 200)); 
        break; 
      case motionevent.action_up: 
        v.setbackgroundcolor(color.white); 
        break; 
    } 
  } 

显示对话框：

dialogselectcall.show() 

dialogfragment实现源码：

定义了一个类selectcalldialog.java继承dialogfragment

package com.bazhangkeji.classroom.common; 
 
import android.app.dialog; 
import android.app.fragmentmanager; 
import android.graphics.color; 
import android.os.bundle; 
import android.support.annotation.nonnull; 
import android.view.gravity; 
import android.view.layoutinflater; 
import android.view.motionevent; 
import android.view.view; 
import android.view.viewgroup; 
import android.view.window; 
import android.view.windowmanager; 
import android.widget.button; 
import android.widget.relativelayout; 
 
import com.bazhangkeji.classroom.r; 
import com.bazhangkeji.classroom.session.videosessionactivity; 
import com.bazhangkeji.classroom.session.voicesessionactivity; 
import com.jakewharton.rxbinding2.view.rxview; 
import com.trello.rxlifecycle2.android.fragmentevent; 
import com.trello.rxlifecycle2.components.rxdialogfragment; 
 
 
import java.util.concurrent.timeunit; 
 
public class selectcalldialog extends rxdialogfragment { 
  private dialog dialog; 
  private string userid; 
 
  /** 
   * 初始化.必须调用一次 
   * @param userid: 目标用户id 
   */ 
  public void init(string userid) { 
    this.userid = userid; 
  } 
 
  @nonnull 
  @override 
  public dialog oncreatedialog(bundle savedinstancestate) { 
    dialog = new dialog(getactivity(), r.style.dialogpopbottom); 
 
    view inflate = layoutinflater.from(getactivity()).inflate(r.layout.dialog_select_call, null); 
    dialog.setcontentview(inflate); 
    dialog.setcanceledontouchoutside(true); 
 
    window window = dialog.getwindow(); 
    windowmanager.layoutparams lp = window.getattributes(); 
    lp.gravity = gravity.bottom; 
    lp.width = windowmanager.layoutparams.match_parent; 
    window.setattributes(lp); 
 
    relativelayout layoutvoice = (relativelayout) inflate.findviewbyid(r.id.layout_voice); 
    relativelayout layoutvideo = (relativelayout) inflate.findviewbyid(r.id.layout_video); 
    button buttoncancel = (button) dialog.findviewbyid(r.id.cancel); 
 
    rxview.clicks(layoutvoice) 
        .throttlefirst(2, timeunit.seconds) 
        .compose(this.binduntilevent(fragmentevent.destroy)) 
        .subscribe(v -> { 
          dialog.cancel(); 
          voicesessionactivity.startactivitycallout(getactivity(), userid); 
        }); 
 
    rxview.clicks(layoutvideo) 
        .throttlefirst(2, timeunit.seconds) 
        .compose(this.binduntilevent(fragmentevent.destroy)) 
        .subscribe(v -> { 
          dialog.cancel(); 
          videosessionactivity.startactivitycallout(getactivity(), userid); 
        }); 
 
    rxview.clicks(buttoncancel) 
        .throttlefirst(2, timeunit.seconds) 
        .compose(this.binduntilevent(fragmentevent.destroy)) 
        .subscribe(v -> dialog.cancel()); 
 
    rxview.touches(layoutvoice, motionevent -> { 
      deallayouttouch(layoutvoice, motionevent); 
      return false; 
    }).compose(this.binduntilevent(fragmentevent.destroy)).subscribe(motionevent -> {}); 
 
    rxview.touches(layoutvideo, motionevent -> { 
      deallayouttouch(layoutvideo, motionevent); 
      return false; 
    }).compose(this.binduntilevent(fragmentevent.destroy)).subscribe(motionevent -> {}); 
 
    return dialog; 
  } 
 
  private void deallayouttouch(view v, motionevent event) { 
    switch (event.getaction()) { 
      case motionevent.action_down: 
        v.setbackgroundcolor(color.rgb(200, 200, 200)); 
        break; 
      case motionevent.action_up: 
        v.setbackgroundcolor(color.white); 
        break; 
    } 
  } 
} 

显示对话框前初始化参数：

selectcalldialog.init(userid); 

显示对话框后：

selectcalldialog.show(getfragmentmanager(), ""); 

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。