淺析Android中強大的Dialog

2020-04-11 12:01:55

字體：大中小

來源：轉載

供稿：網友

Android中經常會使用到Dialog（彈出框效果），而且功能非常強大，可以模擬出N種彈出框效果。如圖所示：

下面將通過一個小實例，來像大家展示Android中功能強大的Dialog。代碼都寫了詳細的注釋，讀者不妨試著手動去敲。

當然，由于時間的關系，還有個別功能沒有完成，先有的幾個展示效果中也可能有bug，代碼也有很多需要優化的地方。望大家熱心指出。

下面是代碼（有點長哦）：

復制代碼代碼如下:

package com.chaoyang.activity;

import java.util.ArrayList;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends Activity {
    /** Called when the activity is first created. */

final String[] items={"張三","李四","王五","趙六","阿貓","阿狗"};
    int mSingleChoiceID = -1;
    ArrayList <Integer>MultiChoiceID = new ArrayList <Integer>();
    private ProgressDialog mProgressDialog = null;
    private static final int MAX_PROGRESS = 100;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        /*START 設置那些按鈕的點擊監聽對象*/
        ButtonOnclikListen listen =new ButtonOnclikListen();
        Button btnConfim =(Button)this.findViewById(R.id.btnConfim);
        Button btnCheck =(Button)this.findViewById(R.id.btnCheck);
        Button btnCustom =(Button)this.findViewById(R.id.btnCustom);
        Button BtnList =(Button)this.findViewById(R.id.BtnList);
        Button btnMore =(Button)this.findViewById(R.id.btnMore);
        Button BtnProgressbar =(Button)this.findViewById(R.id.BtnProgressbar);
        Button btnRead =(Button)this.findViewById(R.id.btnRead);
        Button btnRidio =(Button)this.findViewById(R.id.btnRidio);

        btnConfim.setOnClickListener(listen);
        btnCheck.setOnClickListener(listen);
        btnConfim.setOnClickListener(listen);
        BtnList.setOnClickListener(listen);
        btnMore.setOnClickListener(listen);
        BtnProgressbar.setOnClickListener(listen);
        btnRead.setOnClickListener(listen);
        btnRidio.setOnClickListener(listen);

        /* END */

    }
    //定義一個公共方法，彈出消息
    private void showDialogMSG(String msg) {
   new AlertDialog.Builder(MainActivity.this)
            .setMessage(msg)
            .show();
       }
    //定義一個內部類，繼承至OnClickListener，專門來處理按鈕點擊事件（面向對象，靈活）
    private final class ButtonOnclikListen implements View.OnClickListener
    {

  @Override
  public void onClick(View v) {
   // TODO Auto-generated method stub
   Button button =(Button) v;//接收被點擊的Button對象
   AlertDialog.Builder builder =new AlertDialog.Builder(MainActivity.this);//定義一個彈出框對象
   builder.setIcon(R.drawable.aa);//設置彈出框的ICON

   switch (v.getId())
   {
   case R.id.btnConfim :
    builder.setTitle("確定提交嗎？");//設置彈出框的標題
    builder.setPositiveButton("確定", new DialogInterface.OnClickListener() {
     @Override
     public void onClick(DialogInterface dialog, int which) {
      showDialogMSG("您選擇了確定");
     }
    });
    builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {

     @Override
     public void onClick(DialogInterface dialog, int which) {
      showDialogMSG("您選擇了取消");
     }
    });

    break;
   case R.id.btnMore:
    builder.setTitle("評價");//標題
    builder.setMessage("說說李孝利在你心里的印象");//彈出框消息
    builder.setPositiveButton("性感",new DialogInterface.OnClickListener() {

     @Override
     public void onClick(DialogInterface dialog, int which) {
      // TODO Auto-generated method stub
         showDialogMSG("您覺得她很性感");
     }
    });
    builder.setNeutralButton("漂亮", new DialogInterface.OnClickListener() {

     @Override
     public void onClick(DialogInterface dialog, int which) {
      // TODO Auto-generated method stub
       showDialogMSG("您覺得她很漂亮");
     }
    });
    builder.setNegativeButton("風騷", new DialogInterface.OnClickListener() {

     @Override
     public void onClick(DialogInterface dialog, int which) {
      // TODO Auto-generated method stub
      showDialogMSG("您覺得她很風騷");
     }
    });
    break;
case R.id.BtnList :
    builder.setTitle("列表框");
    builder.setItems(items, new DialogInterface.OnClickListener() {

     @Override
     public void onClick(DialogInterface dialog, int which) {
      // TODO Auto-generated method stub
     showDialogMSG("您選擇了ID為"+which+"的人，名字叫："+items[which]);
     }
    });
    break;
   case R.id.btnRidio:
     mSingleChoiceID = -1;
    builder.setTitle("單選框");
    builder.setSingleChoiceItems(items, 0, new DialogInterface.OnClickListener() {

     @Override
     public void onClick(DialogInterface dialog, int which) {
      // TODO Auto-generated method stub
      mSingleChoiceID=which;
      showDialogMSG("您選擇了ID是"+mSingleChoiceID+",名字為："+items[which]);
     }
    });
    builder.setPositiveButton("確定", new DialogInterface.OnClickListener() {

     @Override
     public void onClick(DialogInterface dialog, int which) {
      // TODO Auto-generated method stub
      if(mSingleChoiceID>-1)
      {
       showDialogMSG("您最終選擇的是"+items[mSingleChoiceID]);
      }else
      {
       showDialogMSG("您最終選擇的是"+items[0]);
      }
     }
    });
    builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {

     @Override
     public void onClick(DialogInterface dialog, int which) {
      // TODO Auto-generated method stub

     }
    });
    break;
case R.id.btnCheck :
MultiChoiceID.clear(); //先清空集合
    builder.setTitle("多項選擇");
    builder.setMultiChoiceItems(items,new boolean[]{false,false,false,false,false,false}, new DialogInterface.OnMultiChoiceClickListener() {

     @Override
     public void onClick(DialogInterface dialog, int which, boolean isChecked) {
      // TODO Auto-generated method stub
      if(isChecked)
      {
       MultiChoiceID.add(which);
       showDialogMSG("您選擇了"+items[which]);
      }else
      {
       MultiChoiceID.remove(which);
      }

     }
    });
    builder.setPositiveButton("確定", new DialogInterface.OnClickListener() {

     @Override
     public void onClick(DialogInterface dialog, int which) {
      // TODO Auto-generated method stub

     String str="";
     for(int i = 0;i<MultiChoiceID.size();i++)
     {
      str+=items[MultiChoiceID.get(i)]+",";
     }
     //去掉最后一個","
     if(str.length()>0){
    str = str.substring(0,str.length()-1);
     }
     showDialogMSG("你一共選擇的有"+str);
     }
    });
    builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {

     @Override
     public void onClick(DialogInterface dialog, int which) {
      // TODO Auto-generated method stub

     }
    });
    break;
   case R.id.BtnProgressbar:
    mProgressDialog =new ProgressDialog(MainActivity.this);
    mProgressDialog.setTitle("進度條窗口");
    mProgressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);//設置樣式
    mProgressDialog.setMax(MAX_PROGRESS);//設置最大值
     mProgressDialog.setButton("確定", new DialogInterface.OnClickListener() {
                  public void onClick(DialogInterface dialog, int whichButton) {
                      //這里添加點擊后的邏輯
                  }
              });
              mProgressDialog.setButton2("取消", new DialogInterface.OnClickListener() {
                  public void onClick(DialogInterface dialog, int whichButton) {
                      //這里添加點擊后的邏輯
                  }
              });
              mProgressDialog.show();
              new Thread().start();
              return;
case R.id.btnCustom:

    break;
case R.id.btnRead:

break;
   }

   builder.create().show();//創建并顯示彈出框


  }


    }


}

布局文件部分，比較簡單：

復制代碼代碼如下:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView  
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="@string/hello"
    />
    <Button
    android:id="@+id/btnConfim"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content"
    android:text="確定/取消"
    />
     <Button
    android:id="@+id/btnMore"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content"
    android:text="多個消息提示"
    />
     <Button
    android:id="@+id/BtnList"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content"
    android:text="列表框"
    />
     <Button
    android:id="@+id/BtnProgressbar"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content"
    android:text="進度條框"
    />
     <Button
    android:id="@+id/btnRidio"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content"
    android:text="單選框"
    />
     <Button
    android:id="@+id/btnCheck"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content"
    android:text="多選框"
    />
     <Button
    android:id="@+id/btnCustom"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content"
    android:text="自定義布局"
    />
      <Button
    android:id="@+id/btnRead"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content"
    android:text="讀取進度框"
    />
</LinearLayout>