Android如何修复相机方向 [英] Android how to fix camera orientation

问题描述

>

相机的视图（非捕获的图像）被翻转到左边（上图），活动的方向是正确的，但相机视图被搞砸了，请

Notice how the view of the camera (NOT THE CAPTURED IMAGE) was flipped to left (image above), the orientation of the Activity is correct, but the camera view is messed up, please help me guys :) thank you.

这里是 xml 文件：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical" >

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:gravity="center|top"
            android:orientation="vertical" >

            <SurfaceView
                android:id="@+id/camerapreview"
                android:layout_margin="10dp"
                android:layout_width="300dp"
                android:layout_height="300dp" />
        </LinearLayout>
    </LinearLayout>

</LinearLayout>

这里是 java / p>

And here is the java code :

public class CustomCameraActivity extends Activity implements SurfaceHolder.Callback {

    Camera camera;
    SurfaceView surfaceView;
    SurfaceHolder surfaceHolder;
    boolean previewing = false;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.camera);

        surfaceView = (SurfaceView)findViewById(R.id.camerapreview);
        surfaceHolder = surfaceView.getHolder();
        surfaceHolder.addCallback(this);

    }

    @Override
    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
        if(previewing){
            camera.stopPreview();
            previewing = false;
        }

        if (camera != null){
            try {
                camera.setPreviewDisplay(surfaceHolder);
                camera.startPreview();
                previewing = true;
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    @Override
    public void surfaceCreated(SurfaceHolder holder) {
        camera = Camera.open();
    }

    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {
        camera.stopPreview();
        camera.release();
        camera = null;
        previewing = false;
    }
}

推荐答案

I在此处此处找到了解决方案。

I found the solution here. Answer by @Ed Jellard.

我只需在<$ c上添加 camera.setDisplayOrientation（90）; $ c> surfaceCreated（SurfaceHolder holder）方法，现在显示在正确的角度。

i just have to add camera.setDisplayOrientation(90); on surfaceCreated(SurfaceHolder holder) method, now the display is on the right angle.

查看快乐的T-REX：）

see the happy T-REX :)

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