【发布时间】：2016-12-20 12:14:27
【问题描述】：
我在我的应用程序中实现了 Surface，它可以在某些设备（galaxy、htc、...）上运行，但是在索尼 Xperia 中，当我的活动加载时，我的设置参数有错误，我应该如何解决这个错误？
活动：
public class TakePhotoActivity extends Activity implements SurfaceHolder.Callback, Camera.ShutterCallback, Camera.PictureCallback{
Camera mCamera;
SurfaceView mPreview;
boolean isPreviewRunning;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_photo_capture);
mPreview = (SurfaceView)findViewById(R.id.preview);
mPreview.getHolder().addCallback(this);
mPreview.getHolder().setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
mCamera = Camera.open();
}
@Override
public void onPause() {
super.onPause();
mCamera.stopPreview();
finish();
}
@Override
public void onDestroy() {
super.onDestroy();
mCamera.release();
}
public void onCancelClick(View v) {
finish();
}
public void onSnapClick(View v) {
mCamera.takePicture(this, null, null, this);
}
public void onSaveClick(View v) {
}
@Override
public void onShutter() {
//Toast.makeText(this, "Click!", Toast.LENGTH_SHORT).show();
}
@Override
public void onPictureTaken(byte[] data, Camera camera) {
try {
/*try {
File file = new File(Environment.getExternalStorageDirectory().getPath() + File.separator +"DocumentsWallet" );
if( ! file.exists()){
file.mkdirs();
}
FileOutputStream out = new FileOutputStream(file.getPath()+"/pic.jpeg");
out.write(data);
out.flush();
out.close();
}catch(Exception ex){
Toast.makeText(this,ex.getMessage(),Toast.LENGTH_LONG).show();
}*/
Photos img=new Photos();
Bitmap bmp=img.convertArrayByteToBitmap(data);
Bitmap bitmap=img.rotateImage(bmp,90);
showPhoto(bitmap);
} catch (Exception e) {
Toast.makeText(this,"Error in onPictureTaken method : "+e.getMessage(),Toast.LENGTH_LONG).show();
}
camera.startPreview();
}
private void showPhoto(Bitmap bitmap) {
ImageView img = (ImageView) findViewById(R.id.imageView2);
mPreview.setVisibility(View.INVISIBLE);
img.setImageBitmap(bitmap);
img.setVisibility(View.VISIBLE);
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
try {
if (isPreviewRunning) {
mCamera.stopPreview();
}
Camera.Parameters params = mCamera.getParameters();
Camera.Size selected = getBestPreviewSize();
params.setPreviewSize(selected.width, selected.height);
params.setPictureSize(selected.width, selected.height);
setCameraDisplayOrientation();
params.setPictureFormat(PixelFormat.JPEG);
mCamera.setParameters(params);
isPreviewRunning = true;
mCamera.startPreview();
}catch (Exception ex){
}
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
try {
mCamera.setPreviewDisplay(mPreview.getHolder());
} catch (Exception e) {
Toast.makeText(this,e.getMessage(),Toast.LENGTH_SHORT).show();
}
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
isPreviewRunning = false;
}
private Camera.Size getBestPreviewSize( ) {
List<Camera.Size> sizeList = mCamera.getParameters().getSupportedPreviewSizes();
Toast.makeText(this,sizeList.size()+"",Toast.LENGTH_LONG).show();
Camera.Size bestSize = sizeList.get(0);
for(int i = 1; i < sizeList.size(); i++){
if( (sizeList.get(i).width * sizeList.get(i).height) > ( bestSize.width * bestSize.height ) ){
bestSize = sizeList.get(i);
}
}
return bestSize;
}
private void setCameraDisplayOrientation(){
try {
android.hardware.Camera.CameraInfo info =
new android.hardware.Camera.CameraInfo();
android.hardware.Camera.getCameraInfo(Camera.CameraInfo.CAMERA_FACING_BACK, info);
int rotation = getWindowManager().getDefaultDisplay()
.getRotation();
int degrees = 0;
switch (rotation) {
case Surface.ROTATION_0:
degrees = 0;
break;
case Surface.ROTATION_90:
degrees = 90;
break;
case Surface.ROTATION_180:
degrees = 180;
break;
case Surface.ROTATION_270:
degrees = 270;
break;
}
int result;
if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
result = (info.orientation + degrees) % 360;
result = (360 - result) % 360; // compensate the mirror
} else { // back-facing
result = (info.orientation - degrees + 360) % 360;
}
mCamera.setDisplayOrientation(result);
}catch (Exception ex){
Toast.makeText(this,"Error in setCameraDisplayOrientation() method : "+ex.getMessage(),Toast.LENGTH_LONG).show();
}
}
}
当我删除并解决了 params.setPictureSize(selected.width, selected.height); 错误时，但我需要最适合我的图像的尺寸。任何人都可以帮助我吗？
【问题讨论】：
标签： android runtime-error surfaceview