android横竖屏切换方法,关于Android的横竖屏切换的判断

分手后的思念是犯贱 2022-10-14 01:14 276阅读 0赞

项目中

activity的定义：

这样定义后每次横竖屏切换都需要重新onCreate() activity  (MyActivity extends BaseActivity)

在BaseActivity.java的onCreate()方法中判断：

代码1：

if (this.getResources().getConfiguration().orientation == ActivityInfo.SCREEN\_ORIENTATION\_LANDSCAPE)\{

isLandscape = true;

System.out.println("<<<<<<<<<<<<<<<<<< This is in Landscape mode... ");

\}else if (this.getResources().getConfiguration().orientation == ActivityInfo.SCREEN\_ORIENTATION\_PORTRAIT)\{ // portrait

isLandscape = false;

System.out.println("<<<<<<<<<<<<<<<<<< This is in Portrait mode... ");

\}else\{

System.out.println("<<<<<<<<<<<<<<<<<< This is in else mode... ");

结果：

从竖屏切换到横屏： 06-12 12:38:14.256: I/System.out(5324): <<<<<<<<<<<<<<<<<< This is in else mode...

再从横屏切换到竖屏： 06-12 12:38:55.946: I/System.out(5324): <<<<<<<<<<<<<<<<<< This is in Portrait mode...

再切依次往复

代码2：

if (getRequestedOrientation() == ActivityInfo.SCREEN\_ORIENTATION\_LANDSCAPE)\{

isLandscape =true;

System.out.println("<<<<<<<<<<<<<<<<<< This is in Landscape mode... ");

\}else if (getRequestedOrientation() == ActivityInfo.SCREEN\_ORIENTATION\_PORTRAIT)\{ // portrait

isLandscape =false;

System.out.println("<<<<<<<<<<<<<<<<<< This is in Portrait mode... ");

\}else\{

System.out.println("<<<<<<<<<<<<<<<<<< This is in else mode... ");

结果：

从竖屏切换到横屏： 06-12 12:38:14.256: I/System.out(5324): <<<<<<<<<<<<<<<<<< This is in else mode...

再从横屏切换到竖屏： 06-12 12:38:55.946: I/System.out(5324): <<<<<<<<<<<<<<<<<< This is in else mode...

再切还是同样的结果！

代码3：

if(height < width)\{

isLandscape =true;

System.out.println("<<<<<<<<<<<<<<<<<< This is in Landscape mode... ");

\}else\{

isLandscape =false;

System.out.println("<<<<<<<<<<<<<<<<<< This is in Portrait mode... ");

结果：

从竖屏切换到横屏： 06-12 12:45:26.838: I/System.out(5756): <<<<<<<<<<<<<<<<<< This is in Landscape mode...

再从横屏切换到竖屏： 06-12 12:45:31.092: I/System.out(5756): <<<<<<<<<<<<<<<<<< This is in Portrait mode...

再切依次往复

总结：第三种代码满足我的要求!

注：

/\*\*

\* Constant corresponding to `unspecified` in