一、标准对话框Dialog

使用AlertDialog类和AlertDailog.Builder类

标准效果图

标准对话框.png

AlertDialog.Builder builder=new AlertDialog.Builder(this);
builder.setIcon(R.mipmap.ic_launcher);
builder.setTitle("对话框再此");
builder.setMessage("hello，我是对话框");
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {    
@Override    
public void onClick(DialogInterface dialogInterface, int i) {
    Toast.makeText(MainActivity.this,"显示标准对话框",Toast.LENGTH_SHORT).show();
}});
builder.setNegativeButton("取消",null);
AlertDialog dialog=builder.create();
dialog.setCanceledOnTouchOutside(true);//点击屏幕外面dialog会消失
dialog.show();

二、列表对话框

列表效果图

列表对话框.png

AlertDialog.Builder builder=new AlertDialog.Builder(this);
builder.setIcon(R.mipmap.ic_launcher);
final String arr[]=getResources().getStringArray(R.array.cities);
builder.setTitle("列表对话框：城市");
builder.setItems(R.array.cities, new DialogInterface.OnClickListener() {
@Override    
public void onClick(DialogInterface dialogInterface, int i) {
    Toast.makeText(MainActivity.this,"选择的城市:"+arr[i],Toast.LENGTH_SHORT).show();
}});
AlertDialog dialog=builder.create();
dialog.setCanceledOnTouchOutside(true);//点击屏幕外面dialog会消失
dialog.show();

三、单选对话框

单选对话框效果图

单选对话框.png

AlertDialog.Builder builder=new AlertDialog.Builder(this);
builder.setIcon(R.mipmap.ic_launcher);
final String arr[]=getResources().getStringArray(R.array.cities);
builder.setTitle("单选对话框：城市");
//默认选中第一个城市
builder.setSingleChoiceItems(R.array.cities, 0, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
    Toast.makeText(MainActivity.this,"选择的城市:"+arr[i],Toast.LENGTH_SHORT).show();
    dialogInterface.dismiss();    
}});
AlertDialog dialog=builder.create();
dialog.setCanceledOnTouchOutside(true);//点击屏幕外面dialog会消失
dialog.show();

四、多选对话框

多选对话框的取值问题，可以看CheckBox那一章

多选对话框效果图

多选对话框.png

AlertDialog.Builder builder=new AlertDialog.Builder(this);
builder.setIcon(R.mipmap.ic_launcher);
final String arr[]=getResources().getStringArray(R.array.cities);
builder.setTitle("多选对话框：城市");
//默认初始化选中选项
boolean checked[]={false,false,true,true,false};
builder.setMultiChoiceItems(R.array.cities, checked, new DialogInterface.OnMultiChoiceClickListener() {
@Override    
public void onClick(DialogInterface dialogInterface, int i, boolean b) {
    Toast.makeText(MainActivity.this,"选择城市:"+arr[i],Toast.LENGTH_SHORT).show();
}});
AlertDialog dialog=builder.create();
dialog.setCanceledOnTouchOutside(true);//点击屏幕外面dialog会消失
dialog.show();