安卓 onOptionsItemSelected onMenuItemSelected onContextItemSelected 区别
2012-02-17 16:13
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在点击选项菜单(OptionsMenu:点击menu弹出的菜单)的菜单项时即调用了onMenuItemSelected 也调用了onOptionsItemSelected ,于是疑惑他们有什么不一样。然后再看上下文菜单(ContextMenu:长按控件时弹出。例如在长按EditTextView时弹出输入的法选择菜单),点击上下文菜单的菜单项时即调用了onMenuItemSelected 也调用了onContextItemSelected
,于是问题就明朗了。在父Activity的onMenuItemSelected 方法中判断如果是选项菜单就走onMenuItemSelected ,如果是上下文菜单就走onContextItemSelected 。
除此还有
onPrepareOptionsMenu:在显示选项菜单前调用
onOptionsMenuClosed:在选项菜单关闭时被调用
onContextMenuClosed:在上下文菜单关闭时调用
,于是问题就明朗了。在父Activity的onMenuItemSelected 方法中判断如果是选项菜单就走onMenuItemSelected ,如果是上下文菜单就走onContextItemSelected 。
除此还有
onPrepareOptionsMenu:在显示选项菜单前调用
onOptionsMenuClosed:在选项菜单关闭时被调用
onContextMenuClosed:在上下文菜单关闭时调用
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