Question

我想让用户选择将手机的方向设置为自动，纵向或横向。这意味着整个手机的方向不仅仅是我的应用程序。每个其他应用程序也必须具有横向方向。这样做的前两个很简单

肖像：

Settings.System.putInt( this.getContentResolver(), Settings.System.ACCELEROMETER_ROTATION, 0);

汽车：

Settings.System.putInt( this.getContentResolver(), Settings.System.ACCELEROMETER_ROTATION, 1);

但我无法找到将其设置为横向的方法。我想将所有应用程序设置为不仅仅是我的应用程序。我在这里看到它可以完成，但它没有提供太多信息。 How to make Android system force LANDSCAPE for all apk?。有谁愿意解释或提供代码片段？

Answer 1

以下代码可以强制您的屏幕进入横向模式。它类似于将其设置为其他模式。

public class MyService extends Service {
    private boolean mViewAdded = false;

    private WindowManager.LayoutParams mLayoutParams;
    private View mOverlayView;
     private WindowManager mWindowManager;

    // Call this some where in your code
    private void setLandscapeOrientation() {
        mWindowManager = ((WindowManager)getSystemService("window"));
        mOverlayView = new View(this);
        mLayoutParams = new WindowManager.LayoutParams();
        mLayoutParams.type = WindowManager.LayoutParams.TYPE_SYSTEM_ERROR;
        mLayoutParams.width = 0;
        mLayoutParams.height = 0;
        mLayoutParams.flags = mLayoutParams.flags |
            WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED |
            WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE |
            WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE;
        mLayoutParams.flags = mLayoutParams.flags &
            ~WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON &
            ~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON;
        mLayoutParams.screenOrientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
        if (mViewAdded) {
            mWindowManager.updateViewLayout(mOverlayView, mLayoutParams);
        } else {
            mWindowManager.addView(mOverlayView, mLayoutParams);
            mViewAdded = true;
        }
    }

    @Override
    public void onDestroy() {
        super.onDestroy();

        if (mViewAdded) {
            mWindowManager.removeView(mOverlayView);
            mViewAdded = false;
        }
    }
}

Answer 2

在AndroidManifest.xml中，针对每个活动

android:screenOrientation="landscape"

它强制活动成为风景

android锁定SYSTEM横向（不仅仅是我的应用程序）

2 个答案: