我在下面实现此代码时遇到错误。 我在CameraActivity.java上收到错误（请参阅我的图片附件） 有谁能解决这个问题？
这是CameraActivity.java
public class CameraActivity extends AppCompatActivity implements SurfaceHolder.Callback{
private Camera camera = null;
private SurfaceView cameraSurfaceView = null;
private SurfaceHolder cameraSurfaceHolder = null;
private boolean previewing = false;
private Display display = null;
private static int wid = 0, hgt = 0;
private LayoutInflater layoutInflater = null;
private View cameraViewControl = null;
private ActionBar.LayoutParams layoutParamsControl = null;
private Button btnCapture = null;
@Override
protected void onCreate(Bundle savedInstanceState)
{
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
display = getWindowManager().getDefaultDisplay();
wid = display.getWidth();
hgt = display.getHeight();
getWindow().setFormat(PixelFormat.TRANSLUCENT);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.cameraoverlay);
cameraSurfaceView = (SurfaceView)findViewById(R.id.cameraSurfaceView);
cameraSurfaceHolder = cameraSurfaceView.getHolder();
cameraSurfaceHolder.addCallback(this);
cameraSurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
layoutInflater = LayoutInflater.from(getBaseContext());
layoutParamsControl = new ActionBar.LayoutParams(ActionBar.LayoutParams.FILL_PARENT, ActionBar.LayoutParams.FILL_PARENT);
cameraViewControl = layoutInflater.inflate(R.layout.cambutton,null);
this.addContentView(cameraViewControl, layoutParamsControl);
btnCapture = (Button)findViewById(R.id.btnCapture);
btnCapture.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
// TODO Auto-generated method stub
camera.takePicture(cameraShutterCallback,
cameraPictureCallbackRaw,
cameraPictureCallbackJpeg);
}
});
}
CameraSource.ShutterCallback cameraShutterCallback = new CameraSource.ShutterCallback()
{
@Override
public void onShutter()
{
// TODO Auto-generated method stub
}
};
CameraSource.PictureCallback cameraPictureCallbackRaw = new CameraSource.PictureCallback()
{
@Override
public void onPictureTaken(byte[] bytes) {
}
public void onPictureTaken(byte[] data, Camera camera)
{
// TODO Auto-generated method stub
}
};
CameraSource.PictureCallback cameraPictureCallbackJpeg = new CameraSource.PictureCallback()
{
@Override
public void onPictureTaken(byte[] bytes) {
}
public void onPictureTaken(byte[] data, Camera camera)
{
// TODO Auto-generated method stub
Bitmap cameraBitmap = BitmapFactory.decodeByteArray(data, 0, data.length);
wid = cameraBitmap.getWidth();
hgt = cameraBitmap.getHeight();
Bitmap newImage = Bitmap.createBitmap(wid, hgt, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(newImage);
canvas.drawBitmap(cameraBitmap, 0f, 0f, null);
Drawable drawable = getResources().getDrawable
(R.drawable.frame);
drawable.setBounds(0, 0, wid, hgt);
drawable.draw(canvas);
File storagePath = new File(Environment.
getExternalStorageDirectory() + "/MyCameraApp/");
storagePath.mkdirs();
File myImage = new File(storagePath,
Long.toString(System.currentTimeMillis()) + ".jpg");
try
{
FileOutputStream out = new FileOutputStream(myImage);
newImage.compress(Bitmap.CompressFormat.JPEG, 80, out);
out.flush();
out.close();
}
catch(FileNotFoundException e)
{
Log.d("In Saving File", e + "");
}
catch(IOException e)
{
Log.d("In Saving File", e + "");
}
camera.startPreview();
drawable = null;
newImage.recycle();
newImage = null;
cameraBitmap.recycle();
cameraBitmap = null;
}
};
@Override
public void surfaceChanged(SurfaceHolder holder,
int format, int width, int height)
{
// TODO Auto-generated method stub
if(previewing)
{
camera.stopPreview();
previewing = false;
}
if (camera != null){
try
{
camera.setPreviewDisplay(cameraSurfaceHolder);
camera.startPreview();
previewing = true;
}
catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
@Override
public void surfaceCreated(SurfaceHolder holder)
{
// TODO Auto-generated method stub
try
{
camera = Camera.open();
}
catch(RuntimeException e)
{
Toast.makeText(getApplicationContext(), "Device camera is not working properly, please try after sometime.", Toast.LENGTH_LONG).show();
}
}
@Override
public void surfaceDestroyed(SurfaceHolder holder)
{
// TODO Auto-generated method stub
camera.stopPreview();
camera.release();
camera = null;
previewing = false;
}}
this is an error on CameraActivity.java
这是cambutton.xml
<?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:gravity="right"
android:orientation="vertical" >
<Button
android:id="@+id/btnCapture"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:background="@drawable/cambutton"
android:gravity="center_vertical" /> </LinearLayout>
这是cameraoverlay.xml
<?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" >
<SurfaceView
android:id="@+id/cameraSurfaceView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/frame" />
</LinearLayout>
希望任何人都可以修复此代码...... 我用android studio 3.0.1编译
答案 0 :(得分：0)
尝试添加：
import android.hardware.Camera;
答案 1 :(得分：0)
让我们从基本语句开始：Java不是一种鸭式语言。这意味着如果两个类A和B都定义了方法 foo（），则不能在期望A类对象的上下文中使用类B的对象，即使您只执行<在那种情况下强> foo（）。
Java 接口也是如此。如果两个接口 IA 和 IB ，都声明方法 onShutter（），并且您有一个实现 IA ，您不能在需要实现 IB 的对象的上下文中使用它。
不幸的是，这是用于Android的Google相机API。它们定义了两个类似的接口ShutterCallback和ShutterCallback。他们甚至有相同的名字，但他们是不同的。第一个全名实际上是 android.hardware.Camera.ShutterCallback ，后者 com.google.android.gms.vision.CameraSource.ShutterCallback
第一个界面是已弃用的 Android Camera API的一部分。如果您定位到Android平台21（Lollipop）及更高版本，Google建议您使用新的camera2 API。
第二个界面是适用于Android的vision Google API的一部分。此API不适用于完整的相机功能。它为一些与摄像机相关的检测任务提供了简单的包装，例如：条形码或面部检测。
您的代码不使用此类检测器。请注意，愿景 API不会暴露许多相机调整控件，例如它确实允许你捕捉图片，但是does not allow you to choose high picture resolution。当您切换到 camera2 API时，您将获得更多控制和更好的性能（您可以从官方basic sample开始）。
另一方面，您可以找到CameraSource.java并根据需要进行修改。
要让您的代码对代码进行最少的更改，为了让它能够正常工作， CameraSource.ShutterCallback 应该重命名为 Camera.ShutterCallback ;同样适用于 PictureCallback s。
你可能有
import com.google.android.gms.vision.CameraSource;
错误。
答案 2 :(得分：0)
是的，我可以修复，
我有同样的错误， 你需要导入正确的相机类（hardware.camera），你实现了图形类的原因。
删除Camera Obj并重新编写并选择hardware.camera。