HTC Desire HD的不能接受的setParameter（）与hardware.Camera [英] HTC Desire HD not accepts setParameter() with hardware.Camera
本文介绍了HTC Desire HD的不能接受的setParameter（）与hardware.Camera的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我是一名学生，我正在开发在Android 2.2的项目。对于我的测试和应用程序的执行，我使用的是HTC Desire HD的（与Android 2.2）。
I'm a student and I am developing on Android 2.2 for a project. For my tests and app executions, I am using an HTC Desire HD (with Android 2.2).
我只是想创建一个composant（类）采取与移动设备的图片。我有一个Android类，这是我的getOptimal previewSize（）方法来使用（这种方法是在ApiDemos 2.2）。此方法用于解决此类错误的：
I just want to create a composant (class) to take a picture with the mobile device. I have an Android class, which I use for the getOptimalPreviewSize() method (this method is in the ApiDemos 2.2). This method is used to fix this type of error :
02-14 21:38:05.818: ERROR/AndroidRuntime(2884): java.lang.RuntimeException: Fail to connect to camera service
02-14 21:38:05.818: ERROR/AndroidRuntime(2884): at android.hardware.Camera.native_setup(Native Method)
02-14 21:38:05.818: ERROR/AndroidRuntime(2884): at android.hardware.Camera.<init>(Camera.java:118)
02-14 21:38:05.818: ERROR/AndroidRuntime(2884): at android.hardware.Camera.open(Camera.java:91)
02-14 21:38:05.818: ERROR/AndroidRuntime(2884): at com.example.android.apis.graphics.Preview.surfaceCreated(CameraPreview.java:69)
02-14 21:38:05.818: ERROR/AndroidRuntime(2884): at android.view.SurfaceView.updateWindow(SurfaceView.java:540)
02-14 21:38:05.818: ERROR/AndroidRuntime(2884): at android.view.SurfaceView.dispatchDraw(SurfaceView.java:339)
02-14 21:38:05.818: ERROR/AndroidRuntime(2884): at android.view.ViewGroup.drawChild(ViewGroup.java:1660)
02-14 21:38:05.818: ERROR/AndroidRuntime(2884): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1389)
02-14 21:38:05.818: ERROR/AndroidRuntime(2884): at android.view.View.draw(View.java:6764)
02-14 21:38:05.818: ERROR/AndroidRuntime(2884): at android.widget.FrameLayout.draw(FrameLayout.java:352)
02-14 21:38:05.818: ERROR/AndroidRuntime(2884): at android.view.ViewGroup.drawChild(ViewGroup.java:1662)
02-14 21:38:05.818: ERROR/AndroidRuntime(2884): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1389)
02-14 21:38:05.818: ERROR/AndroidRuntime(2884): at android.view.View.draw(View.java:6764)
02-14 21:38:05.818: ERROR/AndroidRuntime(2884): at android.widget.FrameLayout.draw(FrameLayout.java:352)
02-14 21:38:05.818: ERROR/AndroidRuntime(2884): at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:1887)
02-14 21:38:05.818: ERROR/AndroidRuntime(2884): at android.view.ViewRoot.draw(ViewRoot.java:1422)
02-14 21:38:05.818: ERROR/AndroidRuntime(2884): at android.view.ViewRoot.performTraversals(ViewRoot.java:1167)
02-14 21:38:05.818: ERROR/AndroidRuntime(2884): at android.view.ViewRoot.handleMessage(ViewRoot.java:1744)
02-14 21:38:05.818: ERROR/AndroidRuntime(2884): at android.os.Handler.dispatchMessage(Handler.java:99)
02-14 21:38:05.818: ERROR/AndroidRuntime(2884): at android.os.Looper.loop(Looper.java:143)
02-14 21:38:05.818: ERROR/AndroidRuntime(2884): at android.app.ActivityThread.main(ActivityThread.java:5068)
02-14 21:38:05.818: ERROR/AndroidRuntime(2884): at java.lang.reflect.Method.invokeNative(Native Method)
02-14 21:38:05.818: ERROR/AndroidRuntime(2884): at java.lang.reflect.Method.invoke(Method.java:521)
02-14 21:38:05.818: ERROR/AndroidRuntime(2884): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
02-14 21:38:05.818: ERROR/AndroidRuntime(2884): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
02-14 21:38:05.818: ERROR/AndroidRuntime(2884): at dalvik.system.NativeStart.main(Native Method)
所以，我解决了这个问题，这code：
So, I fixed this problem with this code :
public class CameraView extends Activity implements SurfaceHolder.Callback {
private SurfaceView mSurfaceView = null;
private SurfaceHolder mSurfaceHolder = null;
private Camera mCamera = null;
private boolean mPreviewRunning = false;
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
getWindow().setFormat(PixelFormat.TRANSLUCENT);
//requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.camera_surface);
mSurfaceView = (SurfaceView) findViewById(R.id.surface_camera);
mSurfaceHolder = mSurfaceView.getHolder();
mSurfaceHolder.addCallback(this);
mSurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
if (!(android.os.Environment.getExternalStorageState().equals(
android.os.Environment.MEDIA_MOUNTED)))
{
Toast
.makeText(CameraView.this, R.string.msgNoSdCard, Toast.LENGTH_LONG)
.show();
}
else
{
Toast
.makeText(CameraView.this, R.string.msgPressBackBt, Toast.LENGTH_LONG)
.show();
}
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
// TODO Auto-generated method stub
mCamera = Camera.open();
try {
mCamera.setPreviewDisplay(holder);
} catch (IOException exception) {
mCamera.release();
mCamera = null;
// TODO: add more exception handling logic here
}
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
mCamera.stopPreview();
mPreviewRunning = false;
mCamera.release();
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
//Handle the back button
if ((keyCode == KeyEvent.KEYCODE_DPAD_CENTER) || (keyCode == KeyEvent.KEYCODE_CAMERA)){
mCamera.takePicture(shutterCallback, rawCallback, jpegCallback);
return true;
}
else {
return super.onKeyDown(keyCode, event);
}
}
ShutterCallback shutterCallback = new ShutterCallback() {
public void onShutter() {
}
};
/** Handles data for raw picture */
PictureCallback rawCallback = new PictureCallback() {
public void onPictureTaken(byte[] data, Camera camera) {
}
};
/** Handles data for jpeg picture */
PictureCallback jpegCallback = new PictureCallback() {
public void onPictureTaken(byte[] data, Camera camera) {
FileOutputStream outStream = null;
try {
// write to local sandbox file system
//outStream =
//CameraView.this.openFileOutput(String.format("%d.jpg",
//System.currentTimeMillis()), 0);
// Or write to sdcard
long fileName = System.currentTimeMillis();
outStream = new FileOutputStream(String.format(
"/sdcard/%d.jpg", fileName));
outStream.write(data);
outStream.close();
Intent resultIntent = new Intent();
String imageFileName = String.format("/sdcard/%d.jpg", fileName);
resultIntent.putExtra("MyAvatar", imageFileName);
setResult(Activity.RESULT_OK, resultIntent);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
catch (IOException e) {
e.printStackTrace();
}
finally {
}
}
};
private Size getOptimalPreviewSize(List<Size> sizes, int w, int h) {
final double ASPECT_TOLERANCE = 0.05;
double targetRatio = (double) w / h;
if (sizes == null) return null;
Size optimalSize = null;
double minDiff = Double.MAX_VALUE;
int targetHeight = h;
// Try to find an size match aspect ratio and size
for (Size size : sizes) {
double ratio = (double) size.width / size.height;
if (Math.abs(ratio - targetRatio) > ASPECT_TOLERANCE) continue;
if (Math.abs(size.height - targetHeight) < minDiff) {
optimalSize = size;
minDiff = Math.abs(size.height - targetHeight);
}
}
// Cannot find the one match the aspect ratio, ignore the requirement
if (optimalSize == null) {
minDiff = Double.MAX_VALUE;
for (Size size : sizes) {
if (Math.abs(size.height - targetHeight) < minDiff) {
optimalSize = size;
minDiff = Math.abs(size.height - targetHeight);
}
}
}
return optimalSize;
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
// Now that the size is known, set up the camera parameters and begin
// the preview.
Camera.Parameters parameters = mCamera.getParameters();
List<Size> sizes = parameters.getSupportedPreviewSizes();
Size optimalSize = getOptimalPreviewSize(sizes, w, h);
parameters.setPreviewSize(optimalSize.width, optimalSize.height);
mCamera.setParameters(parameters);
mCamera.startPreview();
}
}
的最后一个问题是：如果该装置显示所述摄像机视图，该装置是完全迷失方向。如果我将相机指向一个房间（这是拍摄现场）的顶部，屏幕转到左边，如果我把相机到地面，屏幕变成正确的。有同样的问题与错误的高度和宽度，相机方向横向屏幕。
The final problem is : if the device is displaying the Camera View, the device is totally disoriented. If I point the camera to the top of a room (the scene which is filmed), the screen goes to the left, if I put the Camera to the ground, the screen goes the right. There is the same problem with landscape screen with wrong height and width and Camera Orientation.
有没有一个解决方案来解决的摄像头API这个问题与HTC Desire HD的？
Is there a solution to fix this problem of Camera API with the HTC Desire HD ?
谢谢
相关链接：
<一个href="http://stackoverflow.com/questions/4557824/android-2-2-sdk-setparameters-failed-for-camera-api-on-nexus-one">Android 2.2 SDK - setParameters失败摄像头API在Nexus One上
HTTP：//$c$c.google。 COM / P /安卓/问题/详细信息？ID = 7909
推荐答案
好吧，我发现了另一个简单的解决办法：
Okay, I Discover another simple solution :
在Android清单，增加摄像头的活动该属性：
In Android Manifest, add to camera activity this property :
android:screenOrientation="landscape"
和，在相机应用的surfaceChanged：
And, in Camera App for surfaceChanged :
只是这样的：
public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
Camera.Parameters parameters = mCamera.getParameters();
mCamera.setParameters(parameters);
mCamera.startPreview();
}
问候。
这篇关于HTC Desire HD的不能接受的setParameter（）与hardware.Camera的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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