屏幕方向锁定 [英] Screen orientation lock

问题描述

是否有可靠的方法在所有 Android 设备上锁定屏幕方向?下面的代码适用于我的 Nexus S 和其他手机，但由于某种原因，ROTATION_90 对应于 Xoom 上的 SCREEN_ORIENTATION_REVERSE_PORTRAIT.

Is there a reliable way to lock screen orientation on all Android devices? The code below works for my Nexus S and other phones, but for some reason ROTATION_90 corresponds to SCREEN_ORIENTATION_REVERSE_PORTRAIT on the Xoom.

有没有办法可靠地将旋转映射到方向?

Is there any way to reliably map rotation to orientation?

private void lockScreenOrientation() {
    if (!mScreenOrientationLocked) {
        final int orientation = getResources().getConfiguration().orientation;
        final int rotation = getWindowManager().getDefaultDisplay().getOrientation();

        if (rotation == Surface.ROTATION_0 || rotation == Surface.ROTATION_90) {
            if (orientation == Configuration.ORIENTATION_PORTRAIT) {
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
            }
            else if (orientation == Configuration.ORIENTATION_LANDSCAPE) {
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
            }
        }
        else if (rotation == Surface.ROTATION_180 || rotation == Surface.ROTATION_270) {
            if (orientation == Configuration.ORIENTATION_PORTRAIT) {
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);
            }
            else if (orientation == Configuration.ORIENTATION_LANDSCAPE) {
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
            }
        }

        mScreenOrientationLocked = true;
    }
}

private void unlockScreenOrientation() {
    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);
    mScreenOrientationLocked = false;
}

此代码旨在获取当前方向并将其锁定.方向被暂时锁定，然后释放给用户.

This code is meant to get the current orientation and lock it. The orientation is locked temporarily, and then released to the user.

推荐答案

这是我的解决方案，它适用于任何 Android SDK 的手机和平板电脑.

Here is my solution it works on phones and tablets in any Android SDK.

switch (getResources().getConfiguration().orientation){
        case Configuration.ORIENTATION_PORTRAIT:
            if(android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.FROYO){
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
            } else {
                int rotation = getWindowManager().getDefaultDisplay().getRotation();
                if(rotation == android.view.Surface.ROTATION_90|| rotation == android.view.Surface.ROTATION_180){
                    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);
                } else {
                    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
                }
            }   
        break;

        case Configuration.ORIENTATION_LANDSCAPE:
            if(android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.FROYO){
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
            } else {
                int rotation = getWindowManager().getDefaultDisplay().getRotation();
                if(rotation == android.view.Surface.ROTATION_0 || rotation == android.view.Surface.ROTATION_90){
                    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
                } else {
                    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
                }
            }
        break;
    }

这篇关于屏幕方向锁定的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！