Java code

EditText editText = new EditText(this);
new AlertDialog.Builder(this)  
.setTitle("请输入")  
.setIcon(android.R.drawable.ic_dialog_info)  
.setView(editText )  
.setPositiveButton("确定", null)  
.setNegativeButton("取消", null)  
.show();

------解决方案--------------------
对确定按钮监听，再有就是赋值给Activity的成员变量不就行了

------解决方案--------------------

EditText texta = new EditText(this);
new AlerDialog.Builder(this).setIcon(XXX).XXX…….setView( texta );
String Thing = texta.getText();