禁用取向变化

问题描述

再起爆自定义的摄像机，而做变化的 preVIEW模式，从横向到纵向或人像到景观，我的面类code是这样的：

previewSurface.java： -

 公共类previewSurface延伸SurfaceView工具
SurfaceHolder.Callback {

    公共静态最后弦乐LOG_TAG =相机preVIEW;
    私人SurfaceHolder mSurfaceHolder;

    私人相机mCamera;

    //构造，其获得的上下文和摄像头
    @燮pressWarnings（德precation）
    公共previewSurface（上下文的背景下，相机摄像头）{
        超（上下文）;
        this.mCamera =摄像头;

        this.mSurfaceHolder = this.getHolder（）;
        this.mSurfaceHolder.addCallback（本）;
        this.mSurfaceHolder.setType（SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS）;
        this.mSurfaceHolder.setFixedSize（100，100）;
    }

    @覆盖
    公共无效surfaceCreated（SurfaceHolder surfaceHolder）{
        尝试 {
            Camera.Parameters参数= mCamera.getParameters（）;
            如果（this.getResources（）。getConfiguration（）。方向！= Configuration.ORIENTATION_LANDSCAPE）
            {
                 parameters.set（方向，肖像）;
                 mCamera.setDisplayOrientation（90）;
                 parameters.setRotation（90）;
                 mCamera.set previewDisplay（surfaceHolder）;
                 mCamera.start preVIEW（）;
            }
            其他
            {
                 //这是一个无证虽然广为人知的功能
                 parameters.set（方向，山水）;
                 //为Android 2.2及以上
                 mCamera.setDisplayOrientation（0）;
                 //取消注释为Android 2.0及以上
                 parameters.setRotation（0）;
            }
            mCamera.set previewDisplay（surfaceHolder）;
            mCamera.start preVIEW（）;

        }赶上（IOException异常E）{
            //留空现在
        }
    }

    @覆盖
    公共无效surfaceDestroyed（SurfaceHolder surfaceHolder）{
        mCamera.stop preVIEW（）;
        mCamera.release（）;
    }

    @覆盖
    公共无效surfaceChanged（SurfaceHolder surfaceHolder，INT格式，
            INT宽度，高度INT）{

        尝试 {
            Camera.Parameters参数= mCamera.getParameters（）;
            如果（this.getResources（）。getConfiguration（）。方向！= Configuration.ORIENTATION_LANDSCAPE）{
                 parameters.set（方向，肖像）;
                 mCamera.setDisplayOrientation（90）;
                 parameters.setRotation（90）;

            }
                 其他 {
                      //这是一个无证虽然广为人知的功能
                      parameters.set（方向，山水）;
                      //为Android 2.2及以上
                      mCamera.setDisplayOrientation（0）;
                      //取消注释为Android 2.0及以上
                      parameters.setRotation（0）;
            }
            mCamera.set previewDisplay（surfaceHolder）;
            mCamera.start preVIEW（）;

        }赶上（IOException异常E）{
            //留空现在
        }
    }

}
 

我想知道我做错了，我错过了我的code？

解决方案

您必须处理配置更改为你的应用程序。

将此行添加到您的Andr​​oidManifest.xml。

 安卓configChanges =keyboardHidden |方向|屏幕尺寸
 

希望它可以帮助ツ

Re-Initiating Custom Camera, while doing change in Preview modes, from Landscape to Portrait or Portrait to Landscape, my Surface class code looks like this:

PreviewSurface.java:-

public class PreviewSurface extends SurfaceView implements
SurfaceHolder.Callback {

    public static final String LOG_TAG = "CameraPreview";
    private SurfaceHolder mSurfaceHolder;

    private Camera mCamera;

    // Constructor that obtains context and camera
    @SuppressWarnings("deprecation")
    public PreviewSurface(Context context, Camera camera) {
        super(context);
        this.mCamera = camera;

        this.mSurfaceHolder = this.getHolder();
        this.mSurfaceHolder.addCallback(this);
        this.mSurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
        this.mSurfaceHolder.setFixedSize(100, 100);
    }

    @Override
    public void surfaceCreated(SurfaceHolder surfaceHolder) {
        try {
            Camera.Parameters parameters = mCamera.getParameters();
            if (this.getResources().getConfiguration().orientation != Configuration.ORIENTATION_LANDSCAPE)
            {
                 parameters.set("orientation", "portrait");
                 mCamera.setDisplayOrientation(90);
                 parameters.setRotation(90);
                 mCamera.setPreviewDisplay(surfaceHolder);
                 mCamera.startPreview();
            }
            else
            {
                 // This is an undocumented although widely known feature
                 parameters.set("orientation", "landscape");
                 // For Android 2.2 and above
                 mCamera.setDisplayOrientation(0);
                 // Uncomment for Android 2.0 and above
                 parameters.setRotation(0);
            }
            mCamera.setPreviewDisplay(surfaceHolder);
            mCamera.startPreview();

        } catch (IOException e) {
            // left blank for now
        }
    }

    @Override
    public void surfaceDestroyed(SurfaceHolder surfaceHolder) {
        mCamera.stopPreview();
        mCamera.release();
    }

    @Override
    public void surfaceChanged(SurfaceHolder surfaceHolder, int format,
            int width, int height) {

        try {
            Camera.Parameters parameters = mCamera.getParameters();
            if (this.getResources().getConfiguration().orientation != Configuration.ORIENTATION_LANDSCAPE) {
                 parameters.set("orientation", "portrait");
                 mCamera.setDisplayOrientation(90);
                 parameters.setRotation(90);

            }
                 else {
                      // This is an undocumented although widely known feature
                      parameters.set("orientation", "landscape");
                      // For Android 2.2 and above
                      mCamera.setDisplayOrientation(0);
                      // Uncomment for Android 2.0 and above
                      parameters.setRotation(0);
            }
            mCamera.setPreviewDisplay(surfaceHolder);
            mCamera.startPreview();

        } catch (IOException e) {
            // left blank for now
        }
    }

}

May i know where i am doing wrong, what i missed in my code ?

解决方案

You have to handle configuration change for your app .

Add this line to your AndroidManifest.xml.

android:configChanges="keyboardHidden|orientation|screenSize"

Hope it helps ツ

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