btnGeneral.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubAlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);builder.setTitle("提示");builder.setMessage("这是一个普通的对话框！");builder.setIcon(R.drawable.ic_launcher);builder.setCancelable(false);  //必须采取行动builder.setPositiveButton("知道了！", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {dialog.cancel();}});builder.create().show();}});

/*而除了专门为按钮点击实现的DialogInterFace.OnClickListener事件外，DialogInterface还提供了一些其他的事件，供Dialog对象响应，这些事件只是对Dialog声明周期各个状态的响应，一看就明白了，就不再详细讲解了，下面是这几个事件的说明：interface DialogInterface.OnCancelListener：当对话框调用cancel()方法的时候触发。
interface DialogInterface.OnDismissListener：当对话框调用dismiss()方法的时候触发。
interface DialogInterface.OnShowListener：当对话框调用show()方法的时候触发。
interface DialogInterface.OnMultiChoiceListener：当对话框使用多选列表，并且选中的时候触发*/
btnButtons.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubAlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);builder.setTitle("提示");builder.setMessage("这是一个多按钮普通的对话框！");builder.setIcon(R.drawable.ic_launcher);builder.setPositiveButton("确定", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {                        Toast.makeText(MainActivity.this, "确定被点击",Toast.LENGTH_SHORT).show();dialog.dismiss();}});builder.setNegativeButton("否定", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubToast.makeText(MainActivity.this, "否定被点击",Toast.LENGTH_SHORT).show();dialog.dismiss();}});builder.setNeutralButton("忽略", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubToast.makeText(MainActivity.this, "忽略被点击",Toast.LENGTH_SHORT).show();dialog.cancel();}});builder.show();}
});

btnListViewSingle.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubAlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);builder.setTitle("请选择一下城市");builder.setSingleChoiceItems(items, 1, new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubString select_item = items[which].toString();Toast.makeText(MainActivity.this,"选择了--->>" + select_item, Toast.LENGTH_SHORT).show();}});builder.setPositiveButton("确定", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {dialog.dismiss();}});builder.show();}
});

btnListViewMulti.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubAlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);builder.setTitle("请选择城市");builder.setMultiChoiceItems(items, new boolean[] { true, false,true }, new OnMultiChoiceClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which,boolean isChecked) {// TODO Auto-generated method stubString select_item = items[which].toString();Toast.makeText(MainActivity.this,"选择了--->>" + select_item, Toast.LENGTH_SHORT).show();}});builder.setPositiveButton("确定", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {dialog.dismiss();}});builder.show();}});

btnCustomDialog.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {AlertDialog.Builder builder=new AlertDialog.Builder(MainActivity.this);View view=LayoutInflater.from(MainActivity.this).inflate(R.layout.dialog_signin,null);Button btn=(Button)view.findViewById(R.id.btnCustom);btn.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stub
                        alertDialog.dismiss();Toast.makeText(MainActivity.this, "表单填写完成",Toast.LENGTH_SHORT).show();}});builder.setView(view);   // 设置上 LayoutInflateralertDialog=builder.show();                }});

btnProgressDialog.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {// 第一种方法，使用ProgressDialog构造函数progressDialog = new ProgressDialog(MainActivity.this);progressDialog.setIcon(R.drawable.ic_launcher);progressDialog.setTitle("等待");progressDialog.setMessage("正在加载....");progressDialog.show();//第二种方法，使用静态的show方法//progressDialog=ProgressDialog.show(MainActivity.this, "等待", "正在加载....", false, false);new Thread(new Runnable() {@Overridepublic void run() {try {Thread.sleep(5000);            } catch (Exception e) {e.printStackTrace();}finally{progressDialog.dismiss();}                        }}).start();}
});