Android 常见的四种对话框实例讲解

2019-12-12 05:19:52

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1、对话框通知(Dialog Notification)

当你的应用需要显示一个进度条或需要用户对信息进行确认时，可以使用对话框来完成。

下面代码将打开一个如图所示的对话框：

public void click1(View view) {AlertDialog.Builder builder = new Builder(this);builder.setTitle("工学1号馆");builder.setIcon(R.drawable.ic_launcher);builder.setMessage("浏览wuyudong的博客?");builder.setPositiveButton("确定", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {Uri uri = Uri.parse("http://www.wuyudong.com/");// 打开链接Intent intent = new Intent(Intent.ACTION_VIEW, uri);startActivity(intent);}});builder.setNegativeButton("取消", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {dialog.cancel();}});AlertDialog dialog = builder.create();dialog.show();}

2、创建带单选项列表的对话框

public void click2(View view) {AlertDialog.Builder builder = new Builder(this);builder.setTitle("单选对话框");final String[] items = new String[] { "java", ".net", "php" };builder.setSingleChoiceItems(items, 0, new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {Toast.makeText(MainActivity.this, items[which] + "被点击了", 0).show();}});builder.show();}

3、创建带多选项列表的对话框

public void click3(View view) {AlertDialog.Builder builder = new Builder(this);builder.setTitle("多选对话框");final String[] items = new String[] { "java", ".net", "php", "C++" };builder.setMultiChoiceItems(items, new boolean[] { true, false, false,true }, new OnMultiChoiceClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which,boolean isChecked) {Toast.makeText(MainActivity.this, items[which] + isChecked, 0).show();}});builder.setNegativeButton("取消", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {dialog.cancel();}});builder.show();}

4、进度对话框(ProgressDialog)

使用代码ProgressDialog.show(ProgressDialogActivity.this, "请稍等", "数据正在加载中...", true);创建并显示一个进度对话框。
调用setProgressStyle()方法设置进度对话框风格。有两种风格：

ProgressDialog.STYLE_SPINNER 旋体进度条风格 (为默认风格)ProgressDialog.STYLE_HORIZONTAL 横向进度条风格public void click4(View view) {ProgressDialog pd = new ProgressDialog(this);pd.setTitle("提醒");pd.setMessage("正在加载中......");pd.show();}

下面的代码实现横向进度条风格：

public void click5(View view) {final ProgressDialog pd = new ProgressDialog(this);pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);pd.setMax(100);pd.show();new Thread() {public void run() {for (int i = 0; i < 100; i++) {pd.setProgress(i);try {Thread.sleep(20);} catch (InterruptedException e) {e.printStackTrace();}}pd.dismiss();};}.start();}