如何關閉Android警報對話框？

Question

我有一些警報對話框，我的問題是當我單擊右上角的十字（X）（沒有setNegative按鈕）時如何關閉警報對話框。

imgmain.setImageResource(imgID);
        imgmain.setOnClickListener(new OnClickListener() {          
            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                /*Intent MyIntentDetailItem=new Intent(getBaseContext(), ViewDetailItemFullscreen.class);
                Other_class.setItemCode(timgName);
                startActivity(MyIntentDetailItem);*/

                LayoutInflater li = LayoutInflater.from(ViewDetailItem.this);
                final View inputdialogcustom = li.inflate(R.layout.activity_view_detail_item_fullscreen2, null);                
                final AlertDialog.Builder alert = new AlertDialog.Builder(ViewDetailItem.this); 

                ImageView btnclose = (ImageView) inputdialogcustom.findViewById(R.id.btnclosepopup);
                btnclose.setOnClickListener(new View.OnClickListener() {
                    public void onClick(View v) {

//DOING SOMETHING
                    }
                });

       }
}

Answer 1

假設您的X帶有圖片，則可以按照以下方式進行操作，

private static AlertDialog.Builder alert; // at class level

其余代碼相同

alert = new AlertDialog.Builder(ViewDetailItem.this); 
btnclose.setOnClickListener ( new OnClickListener () 
{
     @Override 
     public void onClick ( View view )
     {
          alert.dismiss(); // Add this line in your code.
     }
});

Answer 2

您可以使用關閉功能myalertdialog.dismiss()關閉對話框

Answer 3

使用finish（）退出警報對話框...