本文主要是介绍alertdialog的六种创建方法,希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!
创建AlertDialog的步骤:
1、创建AlertDialog.Builder对象
2、调用Builder对象的setTitle方法设置标题,setIcon方法设置图标
3、调用Builder相关方法如setMessage方法、setItems方法、setSingleChoiceItems方法、setMultiChoiceItems方法、setAdapter方法、setView方法设置不同类型的对话框内容。
4、调用setPositiveButton、setNegativeButton、setNeutralButton设置多个按钮
5、调用Builder对象的create()方法创建AlertDialog对象
6、调用AlertDialog对象的show()方法将对话框显示出来
一、setMessage:设置对话框内容为简单文本内容
// 创建构建器AlertDialog.Builder builder = new AlertDialog.Builder(this);// 设置参数builder.setTitle("请做出选择").setIcon(R.drawable.ic_launcher).setMessage("我美不美").setPositiveButton("美", new OnClickListener() {// 积极 @Overridepublic void onClick(DialogInterface dialog,int which) {// TODO Auto-generated method stubToast.makeText(MainActivity.this, "恭喜你答对了", 0).show();}}).setNegativeButton("不美", new OnClickListener() {// 消极 @Overridepublic void onClick(DialogInterface dialog,int which) {// TODO Auto-generated method stubToast.makeText(MainActivity.this, "一点也不老实", 0).show();}}).setNeutralButton("不知道", new OnClickListener() {// 中间级 @Overridepublic void onClick(DialogInterface dialog,int which) {// TODO Auto-generated method stubToast.makeText(MainActivity.this, "快睁开眼瞅瞅", 0).show();}});builder.create().show();
运行截图:
二、setItem:设置文本框内容为简单列表项
// 创建数据final String[] items = new String[] { "北京", "上海", "广州", "深圳" };// 创建对话框构建器AlertDialog.Builder builder = new AlertDialog.Builder(this);// 设置参数builder.setIcon(R.drawable.ic_launcher).setTitle("提示").setItems(items, new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {Toast.makeText(MainActivity.this, items[which],Toast.LENGTH_SHORT).show();}});builder.create().show();
运行截图:
三、setSingleChoiceItems()设置对话框内容为单选列表项
// 创建数据final String[] items = new String[] { "北京", "上海", "广州", "深圳" };// 创建对话框构建器AlertDialog.Builder builder = new AlertDialog.Builder(this);// 设置参数builder.setIcon(R.drawable.ic_launcher).setTitle("提示").setSingleChoiceItems(items, 0, new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stubToast.makeText(MainActivity.this, items[which],Toast.LENGTH_SHORT).show();}});builder.create().show();
运行截图:
四、setMultiChoiceItems()设置对话框内容为多选项列表
// 创建数据final String[] items = new String[] { "北京", "上海", "广州", "深圳" };// 创建对话框构建器AlertDialog.Builder builder = new AlertDialog.Builder(this);builder.setIcon(R.drawable.ic_launcher).setTitle("提示").setMultiChoiceItems(items,new boolean[] { true, true, false, false, false },new OnMultiChoiceClickListener() {@Overridepublic void onClick(DialogInterface dialog,int which, boolean isChecked) {// TODO Auto-generated method stubif (isChecked) {Toast.makeText(MainActivity.this,items[which], 0).show();}}});builder.create().show();
运行截图:
五、setAdapter()设置对话框内容为自定义列表项(这里是一个布局)
// 创建数据final String[] items = new String[] { "北京", "上海", "广州", "深圳" };// 创建对话框构建器AlertDialog.Builder builder = new AlertDialog.Builder(this);builder.setTitle("提示").setIcon(R.drawable.ic_launcher).setAdapter(new ArrayAdapter<String>(MainActivity.this,R.layout.item, R.id.tv, items),new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog,int which) {// TODO Auto-generated method stubToast.makeText(MainActivity.this, items[which],0).show();}});builder.create().show();
运行截图:
六、setView()设置对话框为自定义View
// 创建对话框构建器AlertDialog.Builder builder = new AlertDialog.Builder(this);// 获取布局View view2 = View.inflate(MainActivity.this, R.layout.login, null);// 获取布局中的控件final EditText username = (EditText) view2.findViewById(R.id.username);final EditText password = (EditText) view2.findViewById(R.id.password);final Button button = (Button) view2.findViewById(R.id.btn_login);// 设置参数builder.setTitle("Login").setIcon(R.drawable.ic_launcher).setView(view2);// 创建对话框final AlertDialog alertDialog = builder.create();button.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubString uname = username.getText().toString().trim();String psd = password.getText().toString().trim();if (uname.equals("shenhua") && psd.equals("123456")) {Toast.makeText(MainActivity.this, "登录成功", 0).show();}Toast.makeText(MainActivity.this, "登录失败", 0).show();alertDialog.dismiss();// 对话框消失 }});alertDialog.show();
运行截图:
SiberiaDante的github地址:https://github.com/SiberiaDante
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