相机 java.lang.RuntimeException：setParameters 失败
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原文地址: http://stackoverflow.com/questions/33579918/
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Camera java.lang.RuntimeException: setParameters failed
提问by Sonali
I have created a custom camera app using thissource code, but on few devices (like on High Resolution Devices) I am getting:
我使用此源代码创建了一个自定义相机应用程序，但在少数设备上（例如在高分辨率设备上）我得到：
RuntimeException setParameters failed
I am facing this exception, due to this:
由于这个原因，我正面临这个异常：
params.setPictureSize(1200, 900);
And I have noticed, If I use (1600, 1200)instead of (1200, 900)then I am not facing such issues
而且我已经注意到，如果我使用(1600, 1200)而不是(1200, 900)那么我就不会面临这样的问题
Logcat:
日志猫：
11-07 11:45:20.630: E/AndroidRuntime(3827): FATAL EXCEPTION: main
11-07 11:45:20.630: E/AndroidRuntime(3827): java.lang.RuntimeException: Unable to resume activity {pl.gatti.dgcam/pl.gatti.dgcam.DgCamActivity}: java.lang.RuntimeException: setParameters failed
11-07 11:45:20.630: E/AndroidRuntime(3827): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2825)
11-07 11:45:20.630: E/AndroidRuntime(3827): at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2854)
11-07 11:45:20.630: E/AndroidRuntime(3827): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2318)
11-07 11:45:20.630: E/AndroidRuntime(3827): at android.app.ActivityThread.access0(ActivityThread.java:144)
11-07 11:45:20.630: E/AndroidRuntime(3827): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1317)
11-07 11:45:20.630: E/AndroidRuntime(3827): at android.os.Handler.dispatchMessage(Handler.java:99)
11-07 11:45:20.630: E/AndroidRuntime(3827): at android.os.Looper.loop(Looper.java:152)
11-07 11:45:20.630: E/AndroidRuntime(3827): at android.app.ActivityThread.main(ActivityThread.java:5132)
11-07 11:45:20.630: E/AndroidRuntime(3827): at java.lang.reflect.Method.invokeNative(Native Method)
11-07 11:45:20.630: E/AndroidRuntime(3827): at java.lang.reflect.Method.invoke(Method.java:511)
11-07 11:45:20.630: E/AndroidRuntime(3827): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
11-07 11:45:20.630: E/AndroidRuntime(3827): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
11-07 11:45:20.630: E/AndroidRuntime(3827): at dalvik.system.NativeStart.main(Native Method)
11-07 11:45:20.630: E/AndroidRuntime(3827): Caused by: java.lang.RuntimeException: setParameters failed
11-07 11:45:20.630: E/AndroidRuntime(3827): at android.hardware.Camera.native_setParameters(Native Method)
11-07 11:45:20.630: E/AndroidRuntime(3827): at android.hardware.Camera.setParameters(Camera.java:1490)
11-07 11:45:20.630: E/AndroidRuntime(3827): at pl.gatti.dgcam.DgCamActivity.createCamera(DgCamActivity.java:124)
11-07 11:45:20.630: E/AndroidRuntime(3827): at pl.gatti.dgcam.DgCamActivity.onResume(DgCamActivity.java:163)
11-07 11:45:20.630: E/AndroidRuntime(3827): at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1185)
11-07 11:45:20.630: E/AndroidRuntime(3827): at android.app.Activity.performResume(Activity.java:5182)
11-07 11:45:20.630: E/AndroidRuntime(3827): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2815)
Code:
代码：
private void createCamera() {
// Create an instance of Camera
mCamera = getCameraInstance();
// Setting the right parameters in the camera
Camera.Parameters params = mCamera.getParameters();
params.setPictureSize(1200, 900);
params.setPictureFormat(PixelFormat.JPEG);
params.setJpegQuality(85);
mCamera.setParameters(params);
// Create our Preview view and set it as the content of our activity.
mPreview = new CameraPreview(this, mCamera);
FrameLayout preview = (FrameLayout) findViewById(R.id.camera_preview);
// Calculating the width of the preview so it is proportional.
float widthFloat = (float) (deviceHeight) * 4 / 3;
int width = Math.round(widthFloat);
// Resizing the LinearLayout so we can make a proportional preview. This
// approach is not 100% perfect because on devices with a really small
// screen the the image will still be distorted - there is place for
// improvment.
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(width, deviceHeight);
preview.setLayoutParams(layoutParams);
// Adding the camera preview after the FrameLayout and before the button
// as a separated element.
preview.addView(mPreview, 0);
}
You may see completeCameraActivityclass code here
您可能会在此处看到completeCameraActivity类代码
And Here is my CameraPreviewclass:
这是我的CameraPreview课：
public class CameraPreview extends SurfaceView implements SurfaceHolder.Callback {
private SurfaceHolder mHolder;
private Camera mCamera;
public CameraPreview(Context context, Camera camera) {
super(context);
mCamera = camera;
// Install a SurfaceHolder.Callback so we get notified when the
// underlying surface is created and destroyed.
mHolder = getHolder();
mHolder.addCallback(this);
// deprecated setting, but required on Android versions prior to 3.0
mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
mHolder.setFixedSize(100, 100);
}
public void surfaceCreated(SurfaceHolder holder) {
// The Surface has been created, now tell the camera where to draw the
// preview.
try {
mCamera.setPreviewDisplay(holder);
mCamera.startPreview();
} catch (IOException e) {
Log.d("DG_DEBUG", "Error setting camera preview: " + e.getMessage());
}
}
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
// If your preview can change or rotate, take care of those events here.
// Make sure to stop the preview before resizing or reformatting it.
if (mHolder.getSurface() == null) {
// preview surface does not exist
return;
}
// stop preview before making changes
try {
mCamera.stopPreview();
} catch (Exception e) {
// ignore: tried to stop a non-existent preview
}
// make any resize, rotate or reformatting changes here
// start preview with new settings
try {
mCamera.setPreviewDisplay(mHolder);
mCamera.setDisplayOrientation(90); // Portrait only
mCamera.startPreview();
} catch (Exception e) {
Log.d("DG_DEBUG", "Error starting camera preview: " + e.getMessage());
}
}
public void surfaceDestroyed(SurfaceHolder holder) {
// empty. Take care of releasing the Camera preview in your activity.
}
}
回答by ρяσ?ρ?я K
Issue is caused by:
问题是由以下原因引起的：
params.setPictureSize(1200, 900);
because required size is not suppoerted by Camera.
因为所需的尺寸不受相机支持。
Use getSupportedPictureSizesto get all available preview sizes.
使用getSupportedPictureSizes得到所有可用的预览大小。
To check which is maximum picture size available from camera:
要检查哪个是相机可用的最大图片尺寸：
List<Size> allSizes = param.getSupportedPictureSizes();
Camera.Size size = allSizes.get(0); // get top size
for (int i = 0; i < allSizes.size(); i++) {
if (allSizes.get(i).width > size.width)
size = allSizes.get(i);
}
//set max Picture Size
params.setPictureSize(size.width, size.height);
回答by Rahul
Any Camera App is restricted by the Camera HAL supported for that device. So in Camera HAL we define that we will provide a list of supported size, these sizes could be preview size, picture size or video size. so I think you are facing this issue, because 1200*900 is not supported by camera HAL or lower level code.
任何相机应用都受到该设备支持的相机 HAL 的限制。因此，在 Camera HAL 中，我们定义将提供支持大小的列表，这些大小可以是预览大小、图片大小或视频大小。所以我认为您正面临这个问题，因为相机 HAL 或更低级别的代码不支持 1200*900。
