android 系統dialog的應用

應用示例如下：

/*
* 提示類型dialog
*/
private void dialog1(){
    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setTitle("test");
    builder.setMessage("Is it exit?"); //設置內容
    builder.setIcon(R.mipmap.ic_launcher);//設置圖標
    builder.setPositiveButton("ok", new DialogInterface.OnClickListener() {
        //which:點擊ok，which是-1
        //點擊cancel，which是-3
        //點擊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) {
        }
    });
    //顯示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();
}
 
/*
* 列表類型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);
        //設置列表顯示，註意設置了列表顯示就不要設置builder.setMessage()了，否則列表不起作用。
        builder.setItems(items,new DialogInterface.OnClickListener() {
            //which是items數組的下標
            @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();
    }

/*
* 單選類型dialog
*/
private void dialog3(){
    final String items[]={"single","double"};
    AlertDialog.Builder builder=new AlertDialog.Builder(this);
    builder.setTitle("test");
    //0表示預設選中是第一個
    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();
}


/*
* 多選類型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是預設的對應的選中狀態。當你選擇時，系統會自動幫你把selected中的值做相應改變，所以在確定按鈕中可以得到所有的選擇狀態
    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會自動根據你選擇的改變selected數組的值。
        }
    });
    builder.create().show();
}