常见对话框

(1)普通对话框

// 点击按钮 弹出一个普通对话框public void click1(View v) {// 构建AlertDialogAlertDialog.Builder builder = new Builder(this);builder.setTitle("警告");builder.setMessage("世界上最遥远的距离是没有网络");builder.setPositiveButton("确定", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {System.out.println("点击了确定按钮 执行的逻辑");}});builder.setNegativeButton("取消", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {System.out.println("点击了取消按钮");}});// 最后一步一定要记得 show出来
        builder.show();}

(2)单选对话框

// 点击按钮 弹出一个单选对话框public void click2(View v) {// 构建AlertDialogAlertDialog.Builder builder = new Builder(this);builder.setTitle("请选择您喜欢的课");final String items[] = { "Android", "ios", "php", "c", "C++", "html" };builder.setSingleChoiceItems(items, -1, new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// 取出点中的条目String item = items[which];Toast.makeText(getApplicationContext(), item, 1).show();// 关闭当前对话框
                dialog.dismiss();}});// 最后一步一定要记得 show出来
        builder.show();}

(3)多选对话框

// 点击按钮 弹出一个多选对话框public void click3(View v) {// 构建AlertDialogAlertDialog.Builder builder = new Builder(this);builder.setTitle("请选择您喜欢吃的水果");final String items[] = { "榴莲", "苹果", "葡萄", "香蕉", "黄瓜", "火龙果", "荔枝" };final boolean[] checkedItems = { true, false, false, false, false,false, true };builder.setMultiChoiceItems(items, checkedItems,new OnMultiChoiceClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which,boolean isChecked) {}});builder.setPositiveButton("确定", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {StringBuffer sb = new StringBuffer();// [1]把你选中的水果给取出来for (int i = 0; i < checkedItems.length; i++) {if (checkedItems[i]) {// 就证明是选中的String fruit = items[i];sb.append(fruit + " ");}}Toast.makeText(getApplicationContext(), sb.toString(), 1).show();// 关闭对话框
                dialog.dismiss();}});// 最后一步一定要记得 show出来
        builder.show();}

(4)进度条对话框

//进度条对话框public void click4(View v) {//与进度相关的控件都可以直接在子线程更新ui final ProgressDialog dialog = new ProgressDialog(this);dialog.setTitle("正在玩命加载ing");dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);dialog.show();//设置进度条的最大值 dialog.setMax(100);new Thread(){public void run() {for (int i = 0; i <= 100; i++) {//设置当前的进度 
                SystemClock.sleep(50);//睡眠50毫秒
                dialog.setProgress(i);}//关闭对话框
            dialog.dismiss();};}.start();}