Android中Dialog对话框的调用及监听
16lz
2021-01-26
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() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubToast.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() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubToast.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() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubswitch (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() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubToast.makeText(MainActivity.this, nameArrStrings[which],Toast.LENGTH_SHORT).show();}});builder.setPositiveButton("确定", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stub}});builder.setNegativeButton("取消", new OnClickListener() {@Overridepublic 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() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubToast.makeText(MainActivity.this, ballArr[which],Toast.LENGTH_SHORT).show();}});builder.setPositiveButton("确定", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stub}});builder.setNegativeButton("取消", new OnClickListener() {@Overridepublic 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() {@Overridepublic void onClick(DialogInterface dialog, int which,boolean isChecked) {// TODO Auto-generated method stubStringBuffer 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() {@Overridepublic 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() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubToast.makeText(MainActivity.this,"输入的密码是：" + editText.getText(),Toast.LENGTH_SHORT).show();}});builder.setNegativeButton("取消",new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubToast.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() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubToast.makeText(MainActivity.this,"输入的密码是：" + editText.getText(),Toast.LENGTH_SHORT).show();}});builder.setNegativeButton("取消",new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubToast.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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