new Intent(String action,Uri uri)构造器说明

 1 protected void onListItemClick(ListView l, View v, int position, long id) {
 2         // 重要
 3         // Returns: a new URI with the given ID appended to the end of the path
 4         Uri uri = ContentUris.withAppendedId(getIntent().getData(), id);
 5         /*
 6          * new Intent.Intent(String action, Uri uri)这种用法还不太熟悉
 7          * 系统会根据第一个参数(action)在清单文件中找对应的activity，如果对应为多个activity，
 8          * 此时就会弹出一个dailog选择Activity
 9          */
10         startActivity(new Intent(MyDiaryEdit.EDIT_TEXT_ACTION, uri));
11 
12     }