button.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View arg0) {                // TODO Auto-generated method stub                AlertDialog dialog = new AlertDialog.Builder(TestAndroid1Activity.this)                        .setTitle("title").setMessage("message").create();                Window window = dialog.getWindow();                window.setGravity(Gravity.BOTTOM);  //此处可以设置dialog显示的位置                    window.setWindowAnimations(R.style.mystyle);  //添加动画                dialog.show();            }        });

 

    

styles.xml

 

       
         
        resources>
     

 

 

位于 res/anim/dialog_enter.xml
       
            
        
     

位于 res/anim/dialog_exit.xml