android 系统dialog的应用

应用示例如下：

/*
* 提示类型dialog
*/
private void dialog1(){
    alertdialog.builder builder = new alertdialog.builder(this);
    builder.settitle("test");
    builder.setmessage("is it exit?"); //设置内容
    builder.seticon(r.mipmap.ic_launcher);//设置图标
    builder.setpositivebutton("ok", new dialoginterface.onclicklistener() {
        //which:点击ok，which是-1
        //点击cancel，which是-3
        //点击ignore，which是-2
        @override
        public void onclick(dialoginterface dialog, int which) {
            dialog.dismiss();
        }
    });
    builder.setnegativebutton("cancel", new dialoginterface.onclicklistener() { 
        @override
        public void onclick(dialoginterface dialog, int which) {
        }
    });
    builder.setneutralbutton("ignore", new dialoginterface.onclicklistener() {
        @override
        public void onclick(dialoginterface dialog, int which) {
        }
    });
    //显示dialog
    builder.create().show();
}
  

private void dialog1(){
    dialoginterface.onclicklistener dialogoncliclistener=new dialoginterface.onclicklistener(){
        @override
        public void onclick(dialoginterface dialog, int which) {
            switch(which){
                case dialog.button_positive:
                    break;
                case dialog.button_negative:
                    break;
                case dialog.button_neutral:
                    break;
                }
            }
        }
    }；
    alertdialog.builder builder=new alertdialog.builder(this);
    builder.settitle("test");
    builder.setmessage("is it exit?");
    builder.seticon(r.mipmap.ic_launcher);
    builder.setpositivebutton("ok",dialogoncliclistener);
    builder.setnegativebutton("cancel", dialogoncliclistener);
    builder.setneutralbutton("ignore", dialogoncliclistener);
    builder.create().show();
}
 
/*
* 列表类型dialog
*/
private void dialog2() {
    final string items[]={"test1","test2","test3"};
    alertdialog.builder builder=new alertdialog.builder(this);
    builder.settitle("test");
    builder.seticon(r.mipmap.ic_launcher);
        //设置列表显示，注意设置了列表显示就不要设置builder.setmessage()了，否则列表不起作用。
        builder.setitems(items,new dialoginterface.onclicklistener() {
            //which是items数组的下标
            @override
            public void onclick(dialoginterface dialog, int which) {
            }
        });
        builder.setpositivebutton("ok",new dialoginterface.onclicklistener() {
            @override
            public void onclick(dialoginterface dialog, int which) {
            }
        });
        builder.create().show();
    }

/*
* 单选类型dialog
*/
private void dialog3(){
    final string items[]={"single","double"};
    alertdialog.builder builder=new alertdialog.builder(this);
    builder.settitle("test");
    //0表示默认选中是第一个
    builder.setsinglechoiceitems(items,0,new dialoginterface.onclicklistener() {
        @override
        public void onclick(dialoginterface dialog, int which) {
        }
    });
    builder.setpositivebutton("ok",new dialoginterface.onclicklistener() {
        @override
        public void onclick(dialoginterface dialog, int which) {
        }
    });
    builder.create().show();
}


/*
* 多选类型dialog
*/
private void dialog4(){
    final string items[]={"north korea","american","syria"};
    final boolean selected[]={true,false,true};
    alertdialog.builder builder=new alertdialog.builder(this);
    builder.settitle("test");
    //selected是默认的对应的选中状态。当你选择时，系统会自动帮你把selected中的值做相应改变，所以在确定按钮中可以得到所有的选择状态
    builder.setmultichoiceitems(items,selected,new dialoginterface.onmultichoiceclicklistener() {
        @override
        public void onclick(dialoginterface dialog, int which, boolean ischecked) {
        }
    });
    builder.setpositivebutton("ok",new dialoginterface.onclicklistener() {
        @override
        public void onclick(dialoginterface dialog, int which) {
            //android会自动根据你选择的改变selected数组的值。
        }
    });
    builder.create().show();
}