冻结屏幕方向

Question

CheckBox包含以下代码:

    CheckBox cb = (CheckBox)findViewById(R.id.freezer);
    cb.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            if (isChecked) {
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_NOSENSOR);
            } else {
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_FULL_SENSOR);
            }
        }
    });

因此,当我检查它时,屏幕旋转到默认的系统方向(我的平板电脑的风景).

我需要冻结CURRENT方向.如果您将设备设置为纵向和切换CheckBox,则必须插入设备旋转,直到取消选中CheckBox.

Display.getRotation()不是解决方案,因为每个设备都有自己的Surface.ROTATION

Answer 1

所以,这是我的解决方案.

private int getCurentOrientation() {
    Display d = ((WindowManager) getSystemService(WINDOW_SERVICE))
            .getDefaultDisplay();
    boolean isWide = d.getWidth() >= d.getHeight();
    switch (d.getRotation()) {
    case Surface.ROTATION_0:
        return isWide ? ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE
                : ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
    case Surface.ROTATION_90:
        return isWide ? ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE
                : ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT;
    case Surface.ROTATION_180:
        return isWide ? ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE
                : ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT;
    case Surface.ROTATION_270:
        return isWide ? ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE
                : ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
    }
    return -1;
}

private void lockOrientation(boolean lock) {
    if (lock) {
        setRequestedOrientation(getCurentOrientation());
    } else {
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_FULL_SENSOR);
    }
}

在4个设备(2个智能手机和2个平板电脑)上,它可以作为nedded使用.