Android platform based realization method for multi-level tree menu

Abstract

The invention discloses an android platform based realization method for a multi-level tree menu. The method comprises the steps of abstracting out an object that describes level information; abstracting out a display file of the level information; when the information is displayed for a user, making the following judgments: firstly judging whether a current level is a father level or not, and if the current level is the father level, calculating a displayed level name through level depth information of the current level and setting a picture displaying a folding state of the level to be operable; if the current level is not the father level, calculating the displayed level name through the level depth information of the current level and setting the picture displaying the folding state of the level to be invisible; only displaying visible level information in a current screen of a mobile phone in a tree menu, and when the level is clicked by the user, making the following judgments: obtaining the level information of the level selected by the user and performing information transmission, wherein the level information is used for expanding the tree menu; and if the level selected by the user is a final level, obtaining the level information of the level selected by the user and performing information display.

Description

【Technical field】 [0001] The invention relates to the field of display, in particular to a method for realizing a multi-level tree menu based on an Android platform. 【Background technique】 [0002] At present, many android (Android) applications need a multi-level tree list, for example, a vehicle with area attribution and group attribution. When showing the user the area to which the car belongs, it is necessary to display the area to which the car belongs. If a user has set a group in the area, then the group information to which the car belongs should also be displayed. As far as the above example is concerned, the display of the car has at least three levels, namely: the area it belongs to-the group it belongs to-vehicle. If the grouping of users is further detailed, the level to which a car belongs is uncertain, and it is not limited to the third level, fourth level, etc. Since these levels of information are controlled by the user, for a good user experience, the App...

AI Technical Summary

Problems solved by technology

[0004] The existing technology has the following disadvantages: 1. In the case where the user can set groups, the user group usually has multiple levels, and the user group is often random, so the levels of each vehicle are different, and some parent levels even appear case of no final tier

2. Using ExpandableListView to nest ListView / ExpandableListView is complex to implement, and when ExpandableListView nests multiple listviews or expandablelistviews, it will cause event conflicts in the view itself, burying many bugs that are not easy to detect or even unsolvable

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