• Android中Dialog对话框的调用及监听


    Android中经常会需要在Android界面上弹出一些对话框提示用户,比如App的退出的时候都会有各种框来挽留你的心,支付宝的时候输入密码的密码框,非常常见及其实用的功能,类似于JS中的alter,C#中C/S中常用MessgeBox,总而言之就是一个功能弹,弹,弹,本文就简单的叙述一下Dialog的各种弹框使用及监听,顺便写了一个简单的自定义弹框,接下来请看正文:

    一般对话框

    先看下整个App页面:

    看下一般对话框的结果:

    具体代码的实现,其中定义了两个按钮,一个是确定(PositiveButton)按钮,一个是取消(NegativeButton)按钮:

    	builder = new AlertDialog.Builder(this);
    			builder.setTitle("亲,你真的要离开吗?");
    			// 相当于确定
    			builder.setPositiveButton("退出",
    					new DialogInterface.OnClickListener() {
    						@Override
    						public void onClick(DialogInterface dialog, int which) {
    							// TODO Auto-generated method stub
    							Toast.makeText(MainActivity.this, "是的,哥要走了",
    									Toast.LENGTH_SHORT).show();
    						}
    					});
    			// 相当于取消
    			builder.setNegativeButton("再看看",
    					new DialogInterface.OnClickListener() {
    
    						@Override
    						public void onClick(DialogInterface dialog, int which) {
    							// TODO Auto-generated method stub
    							Toast.makeText(MainActivity.this, "行,哥再看会",
    									Toast.LENGTH_SHORT).show();
    						}
    					});
    
    			builder.show();
    

     ICON对话框

    上面只是用到了两个按钮,其实还有一个是中立按钮,另外发现每次都写一个监听事件感觉太麻烦了,可以单独写一个监听事件去判断哪个事件被触发了:

    单独定义个DialogClickListener:

    	private DialogInterface.OnClickListener dialogClickListener = new DialogInterface.OnClickListener() {
    
    		@Override
    		public void onClick(DialogInterface dialog, int which) {
    			// TODO Auto-generated method stub
    			switch (which) {
    			case DialogInterface.BUTTON_POSITIVE:
    				Toast.makeText(MainActivity.this, "强烈支持" + which,
    						Toast.LENGTH_SHORT).show();
    				break;
    			case DialogInterface.BUTTON_NEUTRAL:
    				Toast.makeText(MainActivity.this, "跟我无关,我是中立的" + which,
    						Toast.LENGTH_SHORT).show();
    				break;
    			case DialogInterface.BUTTON_NEGATIVE:
    				Toast.makeText(MainActivity.this, "强烈反对" + which,
    						Toast.LENGTH_SHORT).show();
    				break;
    			default:
    				break;
    			}
    		}
    	};
    

      按钮事件的调用:

    	builder = new AlertDialog.Builder(this);
    			builder.setTitle("XX视频");
    			builder.setIcon(android.R.drawable.btn_star);
    			builder.setMessage("如何看待香港占中事件?");
    			builder.setPositiveButton("支持", dialogClickListener);
    			builder.setNegativeButton("反对", dialogClickListener);
    			// 中立
    			builder.setNeutralButton("中立", dialogClickListener);
    			builder.show();
    

    列表对话框

    看下效果图:

    代码实现: 

    		builder = new AlertDialog.Builder(this);
    			builder.setTitle("NBA幻觉");
    			builder.setIcon(android.R.drawable.btn_star);
    			final String[] nameArrStrings = new String[] { "马刺很老", "小牛很弱",
    					"火箭很强" };
    			builder.setItems(nameArrStrings, new OnClickListener() {
    
    				@Override
    				public void onClick(DialogInterface dialog, int which) {
    					// TODO Auto-generated method stub
    					Toast.makeText(MainActivity.this, nameArrStrings[which],
    							Toast.LENGTH_SHORT).show();
    				}
    			});
    			builder.setPositiveButton("确定", new OnClickListener() {
    
    				@Override
    				public void onClick(DialogInterface dialog, int which) {
    					// TODO Auto-generated method stub
    
    				}
    			});
    			builder.setNegativeButton("取消", new OnClickListener() {
    
    				@Override
    				public void onClick(DialogInterface dialog, int which) {
    					// TODO Auto-generated method stub
    
    				}
    			});
    			builder.show();
    

      单选对话框

    效果图:

    代码实现:

    	builder = new AlertDialog.Builder(this);
    			builder.setTitle("NBA球队");
    			builder.setIcon(android.R.drawable.btn_radio);
    			final String[] ballArr = new String[] { "骑士", "热火", "凯尔特人" };
    			builder.setSingleChoiceItems(ballArr, 1, new OnClickListener() {
    
    				@Override
    				public void onClick(DialogInterface dialog, int which) {
    					// TODO Auto-generated method stub
    					Toast.makeText(MainActivity.this, ballArr[which],
    							Toast.LENGTH_SHORT).show();
    				}
    			});
    			builder.setPositiveButton("确定", new OnClickListener() {
    
    				@Override
    				public void onClick(DialogInterface dialog, int which) {
    					// TODO Auto-generated method stub
    
    				}
    			});
    			builder.setNegativeButton("取消", new OnClickListener() {
    
    				@Override
    				public void onClick(DialogInterface dialog, int which) {
    					// TODO Auto-generated method stub
    
    				}
    			});
    			builder.show();
    

      多选对话框

    效果图:

    代码实现:

    	builder = new AlertDialog.Builder(this);
    			builder.setTitle("NBA球星");
    			builder.setIcon(android.R.drawable.btn_radio);
    			final String[] ballstartArr = new String[] { "邓肯", "诺维斯基", "莱昂纳德",
    					"科比" };
    			final boolean[] multiCheckedArrStrings = new boolean[] { true,
    					false, true, false };
    			builder.setMultiChoiceItems(ballstartArr, multiCheckedArrStrings,
    					new OnMultiChoiceClickListener() {
    
    						@Override
    						public void onClick(DialogInterface dialog, int which,
    								boolean isChecked) {
    							// TODO Auto-generated method stub
    							StringBuffer buffer = new StringBuffer();
    							for (int i = 0; i < multiCheckedArrStrings.length; i++) {
    								if (multiCheckedArrStrings[i]) {
    									buffer.append(ballstartArr[i] + ",");
    								}
    							}
    							buffer.deleteCharAt(buffer.length() - 1);
    							Toast.makeText(MainActivity.this, buffer,
    									Toast.LENGTH_SHORT).show();
    						}
    					});
    
    			builder.setPositiveButton("确定", new OnClickListener() {
    
    				@Override
    				public void onClick(DialogInterface dialog, int which) {
    					// TODO Auto-generated method stub
    
    				}
    			});
    			builder.show();

      文本对话框

    比如说支付宝,转账的时候你需要输入密码,弹出一个密码输入框,效果如图:

    代码实现,,这个时候你需要给builder中的view赋值:

    		builder = new AlertDialog.Builder(this);
    			builder.setTitle("输入密码");
    			builder.setIcon(android.R.drawable.btn_star);
    			final EditText editText = new EditText(MainActivity.this);
    			builder.setView(editText);
    			builder.setPositiveButton("确定",
    					new DialogInterface.OnClickListener() {
    						@Override
    						public void onClick(DialogInterface dialog, int which) {
    							// TODO Auto-generated method stub
    							Toast.makeText(MainActivity.this,
    									"输入的密码是:" + editText.getText(),
    									Toast.LENGTH_SHORT).show();
    						}
    					});
    			builder.setNegativeButton("取消",
    					new DialogInterface.OnClickListener() {
    
    						@Override
    						public void onClick(DialogInterface dialog, int which) {
    							// TODO Auto-generated method stub
    							Toast.makeText(MainActivity.this, "取消",
    									Toast.LENGTH_SHORT).show();
    						}
    					});
    
    			builder.show();
    

      自定义对话框

    上面的那个EditText是创建的,其实可以自定义一个布局,然后通过填充进去,效果如下:

    自定义一个dialog_text.xml文件:

    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="horizontal" >
    
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="密码:" />
    
        
        <EditText
            android:id="@+id/edit_password"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            />
    </LinearLayout>

      代码实现:

    		builder = new AlertDialog.Builder(this);
    			builder.setTitle("输入密码");
    			builder.setIcon(android.R.drawable.btn_star);
    			final EditText editText = new EditText(MainActivity.this);
    			builder.setView(editText);
    			builder.setPositiveButton("确定",
    					new DialogInterface.OnClickListener() {
    						@Override
    						public void onClick(DialogInterface dialog, int which) {
    							// TODO Auto-generated method stub
    							Toast.makeText(MainActivity.this,
    									"输入的密码是:" + editText.getText(),
    									Toast.LENGTH_SHORT).show();
    						}
    					});
    			builder.setNegativeButton("取消",
    					new DialogInterface.OnClickListener() {
    
    						@Override
    						public void onClick(DialogInterface dialog, int which) {
    							// TODO Auto-generated method stub
    							Toast.makeText(MainActivity.this, "取消",
    									Toast.LENGTH_SHORT).show();
    						}
    					});
    
    			builder.show();
    

    ------------2015.11.15更新---忘记写了,还有一种是进度条对话框,简单的进度对话框和带进度的对话框-----

    代码如下:

    	ProgressDialog  progressDialog=new  ProgressDialog(this);
    			progressDialog.setTitle("XX助手");
    			progressDialog.setMessage("XX正在更新。。。");
    			progressDialog.show();
    

    显示进度的对话框:

    代码如下:

    		final ProgressDialog  precentDialog=new  ProgressDialog(this);
    			precentDialog.setTitle("XX下载");
    			precentDialog.setMessage("XX正在更新。。。");
    			precentDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);                                   
    			precentDialog.setMax(100);
    			precentDialog.show();
    			new Thread(){
    				public void run() {
    					for (int i = 0; i < 100; i++) {
    						try {
    							Thread.sleep(50);
    						} catch (InterruptedException e) {
    							e.printStackTrace();
    						}
    						precentDialog.setProgress(i);
    					}
    					precentDialog.dismiss();
    				};
    			}.start();  
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  • 原文地址:https://www.cnblogs.com/xiaofeixiang/p/4084056.html
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