標籤:android 螢幕渲染 activity
1. 設定螢幕方向
當指定了螢幕的方向後(非SCREEN_ORIENTATION_UNSPECIFIED),螢幕就不會自動的旋轉了
有2中方式控制螢幕方向:
1.1 修改AndroidManifest.xml
在AndroidManifest.xml的activity中加入:橫屏:
android:screenOrientation=”landscape”豎屏: android:screenOrientation=”portrait”
1.2 setRequestedOrientation
橫屏:
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
豎屏:
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
ActivityInfo:
int |
SCREEN_ORIENTATION_BEHIND |
Constant corresponding to behind in the screenOrientation attribute. |
int |
SCREEN_ORIENTATION_FULL_SENSOR |
Constant corresponding to fullSensor in the screenOrientation attribute. |
int |
SCREEN_ORIENTATION_FULL_USER |
Constant corresponding to fullUser in the screenOrientation attribute. |
int |
SCREEN_ORIENTATION_LANDSCAPE |
Constant corresponding to landscape in the screenOrientation attribute. |
int |
SCREEN_ORIENTATION_LOCKED |
Constant corresponding to locked in the screenOrientation attribute. |
int |
SCREEN_ORIENTATION_NOSENSOR |
Constant corresponding to nosensor in the screenOrientation attribute. |
int |
SCREEN_ORIENTATION_PORTRAIT |
Constant corresponding to portrait in the screenOrientation attribute. |
int |
SCREEN_ORIENTATION_REVERSE_LANDSCAPE |
Constant corresponding to reverseLandscape in the screenOrientation attribute. |
int |
SCREEN_ORIENTATION_REVERSE_PORTRAIT |
Constant corresponding to reversePortrait in the screenOrientation attribute. |
int |
SCREEN_ORIENTATION_SENSOR |
Constant corresponding to sensor in the screenOrientation attribute. |
int |
SCREEN_ORIENTATION_SENSOR_LANDSCAPE |
Constant corresponding to sensorLandscape in the screenOrientation attribute. |
int |
SCREEN_ORIENTATION_SENSOR_PORTRAIT |
Constant corresponding to sensorPortrait in the screenOrientation attribute. |
int |
SCREEN_ORIENTATION_UNSPECIFIED |
Constant corresponding to unspecified in the screenOrientation attribute. |
int |
SCREEN_ORIENTATION_USER |
Constant corresponding to user in the screenOrientation attribute. |
int |
SCREEN_ORIENTATION_USER_LANDSCAPE |
Constant corresponding to userLandscape in the screenOrientation attribute. |
int |
SCREEN_ORIENTATION_USER_PORTRAIT |
Constant corresponding to userPortrait in the screenOrientation attribute. |
2. 禁止旋轉螢幕後重設Activity
旋轉螢幕後會強制調用Activity.onCreate方法,所以會重設Activity
禁止方法:
修改AndroidManifest.xml
android:configChanges=”orientation”
Android 設定橫屏,禁止旋轉螢幕,Activity重設