android – 如何防止布局的方向更改,而不是整个屏幕活动

概述我需要一个子布局(可以是任何布局,如FrameLayout或RelativeLayout)来忽略方向更改并始终保持横向方向.但不是它的父母或任何其他兄弟布局/视图,他们应该相应地改变他们的方向. 因此,我不能使用setRequestedOrientation()或android：screenOrientation =“landscape”.或者它将锁定整个屏幕或活动的方向.我只需要锁定这个单一的布 我需要一个子布局(可以是任何布局,如FrameLayout或relativeLayout)来忽略方向更改并始终保持横向方向.但不是它的父母或任何其他兄弟布局/视图,他们应该相应地改变他们的方向.

因此,我不能使用setRequestedOrIEntation()或android：screenorIEntation =“landscape”.或者它将锁定整个屏幕或活动的方向.我只需要锁定这个单一的布局.

我的布局XML：

relativeLayout (Parent)  TextVIEw    FrameLayout/relativeLayout <-- this need to be locked      FrameLayout        button

解决方法 这可能取决于你的意思是“不改变方向”.但是,我认为最好的起点是为不应该改变的部分创建自己的类.所以布局xml现在有两个文件：

main_layout.xml

relativeLayout (Parent)    TextVIEw        MyNonChangingLayout

my_non_changing_layout.xml

relativeLayout     FrameLayout         button

你创建的地方

MyNonChangingLayout extends FrameLayout {    MyNonchangingLayout(Context content) {        super(context);        myContext = context;        makeFromXML();    }private voID makeFromXML() {    LayoutInflater inflater = (LayoutInflater)myContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);    topVIEw =  inflater.inflate(MyR.layout.my_non_changing_layout,this,false);    // Get all the sub VIEws here using topVIEw.findVIEwByID()    // Do any other initiation of the VIEw you need here    // Make sure you this otherwise it won't actually appear!    super.addVIEw(topVIEw);}/* * Then,you can overrIDe quite a lot of the layout's calls and * enforce behavIoUr on the children. Two examples: */// To specifically catch orIEntation changes@OverrIDgeonConfigurationChanged(Configuration newConfig) {    super.onConfigurationChanged(newConfig);    // You Could create the layout here by removing all vIEws and rebuilding them    // Perhaps by having a two xml layouts,one of which is "90 degrees out" ...    // If you do make the layot here,make sure you don't clash with the constructor code!    switch (newConfig.orIEntation) {        case ORIENTATION_LANDSCAPE:            // Make the layout for this orIEntation (as per above)            break;        case ORIENTATION_PORTRAIT:            // Make the layout for this orIEntation (as per above)            break;        case ORIENTATION_SQUARE:            // Make the layout for this orIEntation (as per above)            break;    }}//to handle size changes to enforce aspect ratios on children:@overrIDeprotected voID onSizeChanged (int w,int h,int olDW,int oldh) {    super.onSizeChanged(w,h,olDW,oldh);    int vIEwWIDth = //something I've determine    int vIEwHeight = //something I've determined    setVIEwsize(vIEwToHaveSizedControlled,vIEwWIDth,vIEwheight);}// The post thing means that it doesn't crash no matter which thread it is// executed on ...private voID setVIEwsize(final VIEw v,final int w,final int h) {    post(new Runnable() {        public voID run() {            VIEwGroup.LayoutParams lp = v.getLayoutParams();            lp.wIDth = w;            lp.height = h;            v.setLayoutParams(lp);    }});}

}

然后,您可以很好地执行您想要的任何事情.如果您可以更具体地了解要在子区域上执行的行为,我可能会建议更具体的代码.

你可能想要做的一件事就是保持

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