自定义相机应用android的问题 - 旋转270，拉伸捕获视图，而不是让所有的功能 [英] Custom camera app in android problems - rotation 270, stretched capture view and not getting all functions
本文介绍了自定义相机应用android的问题 - 旋转270，拉伸捕获视图，而不是让所有的功能的处理方法，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
我从$帮助C $ç https://github.com/josnidhin/Android - 相机 - 示例
但面临着一些问题，如：
- 如何添加自动对焦和闪光灯的功能。 - 在上次编辑code解决的
- 的时候屏幕方向是270那么真实视图显示180度旋转。
- 拍摄视图呈现捉襟见肘。
在 code 从那里我所谓的自定义相机类
相机Cam = Camera.open（）;
如果（空== CAM）
{
//没有摄像头的存在
意图I =新意图（Intent.ACTION_PICK，android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI）;
startActivityForResult（ⅰ，RESULT_LOAD_IMAGE）;
}
其他
{
cam.release（）;
意向意图=新意图（CreateList.this，CamTestActivity.class）;
startActivityForResult（意向，TAKE_PICTURE）;
}
自定义相机类的 CamTestActivity.class
进口java.io.FileNotFoundException;
进口java.io.FileOutputStream中;
进口java.io.IOException异常;进口android.app.Activity;
进口android.content.Context;
进口android.content.Intent;
进口android.hardware.Camera;
进口android.hardware.Camera.AutoFocusCallback;
进口android.hardware.Camera.PictureCallback;
进口android.hardware.Camera.ShutterCallback;
进口android.os.Bundle;
进口android.os.Environment;
进口android.util.Log;
进口android.view.SurfaceView;
进口android.view.View;
进口android.view.View.OnClickListener;
进口android.view.View.OnLongClickListener;
进口android.view.ViewGroup.LayoutParams;
进口android.view.Window;
进口android.view.WindowManager;
进口android.widget.Button;
进口android.widget.FrameLayout;进口com.example.R;公共类CamTestActivity延伸活动{
私有静态最后弦乐TAG =CamTestActivity;
preVIEW preVIEW;
按钮buttonClick，buttonCancel;
摄像头摄像头;
字符串文件名;
活动的行为;
上下文CTX; @覆盖
公共无效的onCreate（捆绑savedInstanceState）{
super.onCreate（savedInstanceState）;
CTX =这一点;
ACT =这一点;
requestWindowFeature（Window.FEATURE_NO_TITLE）;
。getWindow（）addFlags（WindowManager.LayoutParams.FLAG_FULLSCREEN）; 的setContentView（R.layout.take_picture）; preVIEW =新的preVIEW（这一点，（SurfaceView）findViewById（R.id.surfaceView））;
preview.setLayoutParams（新的LayoutParams（LayoutParams.FILL_PARENT，LayoutParams.FILL_PARENT））;
（（的FrameLayout）findViewById（R.id. preVIEW））addView（preVIEW）。
preview.setKeepScreenOn（真）; buttonClick =（按钮）findViewById（R.id.buttonClick）;
buttonCancel =（按钮）findViewById（R.id.buttonCancel）; buttonClick.setOnClickListener（新OnClickListener（）{
公共无效的onClick（视图v）{
camera.takePicture（shutterCallback，rawCallback，jpegCallback）;
}
}）; buttonClick.setOnLongClickListener（新OnLongClickListener（）{
@覆盖
公共布尔onLongClick（查看为arg0）{
camera.autoFocus（新AutoFocusCallback（）{
@覆盖
公共无效onAutoFocus（布尔focus_flag，相机Cam）{
如果（focus_flag）
cam.takePicture（shutterCallback，rawCallback，jpegCallback）;
}
}）;
返回true;
}
}）; buttonCancel.setOnClickListener（新OnClickListener（）{
公共无效的onClick（视图v）{
完（）;
}
}）;
} @覆盖
保护无效onResume（）{
super.onResume（）;
// preview.camera = Camera.open（）;
相机= Camera.open（0）;
camera.start preVIEW（）;
preview.setCamera（摄像头）;
} @覆盖
保护无效的onPause（）{
如果（相机！= NULL）{
camera.stop preVIEW（）;
preview.setCamera（NULL）;
camera.release（）;
摄像头= NULL;
}
super.onPause（）;
} 私人无效resetCam（）{
camera.start preVIEW（）;
preview.setCamera（摄像头）; 意图I =新意图（）;
i.putExtra（captured_img，文件名）;
的setResult（RESULT_OK，I）;
完（）;
} ShutterCallback shutterCallback =新ShutterCallback（）{
公共无效onShutter（）{
// Log.d（TAGonShutter'd）;
}
}; PictureCallback rawCallback =新PictureCallback（）{
公共无效onPictureTaken（字节[]数据，相机摄像头）{
// Log.d（TAGonPictureTaken - 原始）;
}
}; PictureCallback jpegCallback =新PictureCallback（）{
公共无效onPictureTaken（字节[]数据，相机摄像头）{
FileOutputStream中outStream = NULL;
尝试{
//写入SD卡
文件名=的String.format（Environment.getExternalStorageDirectory（）+/FansRave_UploadDeal_Pic.jpg）; outStream =新的FileOutputStream（文件名）;
outStream.write（数据）;
outStream.close（）;
Log.d（TAGonPictureTaken - 写字节：+ data.length）; resetCam（）;
}赶上（FileNotFoundException异常五）{
e.printStackTrace（）;
}赶上（IOException异常五）{
e.printStackTrace（）;
}
Log.d（TAGonPictureTaken - JPEG）;
}
};
}
preview.class
进口java.io.IOException异常;
进口的java.util.List;进口android.content.Context;
进口android.content.pm.PackageManager;
进口android.content.res.Configuration;
进口android.hardware.Camera;
进口android.hardware.Camera.Parameters;
进口android.hardware.Camera.Size;
进口android.util.Log;
进口android.view.SurfaceHolder;
进口android.view.SurfaceView;
进口android.view.View;
进口android.view.ViewGroup;类preVIEW扩展的ViewGroup实现SurfaceHolder.Callback {
私人最终字符串标记=preVIEW SurfaceView mSurfaceView;
SurfaceHolder mHolder;
尺寸M previewSize;
清单＆LT;尺寸和GT; mSupported previewSizes;
相机mCamera;
上下文mContext; preVIEW（上下文的背景下，SurfaceView SV）{
超级（上下文）; mContext =背景;
mSurfaceView = SV; mHolder = mSurfaceView.getHolder（）;
mHolder.addCallback（本）;
mHolder.setType（SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS）;
} 公共无效setCamera（相机摄像机）{
mCamera =摄像头;
如果（mCamera！= NULL）{
mSupported previewSizes = mCamera.getParameters（）getSupported previewSizes（）。
requestLayout（）; //获取相机参数
Camera.Parameters PARAMS = mCamera.getParameters（）; 清单＆LT;串GT; focusModes = params.getSupportedFocusModes（）;
如果（focusModes.contains（Camera.Parameters.FOCUS_MODE_AUTO））{
//设置对焦模式
params.setFocusMode（Camera.Parameters.FOCUS_MODE_AUTO）;
//设置相机参数
mCamera.setParameters（PARAMS）;
}
}
} @覆盖
保护无效onMeasure（INT widthMeasureSpec，诠释heightMeasureSpec）{
//我们故意忽略孩子的测量，因为充当
//封装到中心相机preVIEW而不是SurfaceView
//伸展它。 最终诠释宽度= resolveSize（getSuggestedMinimumWidth（），widthMeasureSpec）;
最终诠释身高= resolveSize（getSuggestedMinimumHeight（），heightMeasureSpec）;
setMeasuredDimension（宽度，高度）; 如果（mSupported previewSizes！= NULL）{
米previewSize = getOptimal previewSize（mSupported previewSizes，宽，高）;
}
} @覆盖
保护无效onLayout（布尔变化，诠释L，INT T，INT R，INT B）{
如果（变更＆放大器;＆放大器; getChildCount（）大于0）{
最后查看孩子= getChildAt（0）; 最终诠释宽度= R - 1;
最终诠释身高= B - 吨; INT previewWidth =宽度;
INT previewHeight =高度; 如果（M previewSize！= NULL）{
previewWidth = M previewSize.width;
previewHeight = M previewSize.height;
} //中心父项子SurfaceView。
如果（宽* previewHeight＆GT;高* previewWidth）{
最终诠释scaledChildWidth = previewWidth *高/ previewHeight;
child.layout（（宽 - scaledChildWidth）/ 2，0，（宽+ scaledChildWidth）/ 2，高度）;
}其他{
最终诠释scaledChildHeight = previewHeight *宽/ previewWidth;
child.layout（0，（高度 - scaledChildHeight）/ 2，宽度，（高度+ scaledChildHeight）/ 2）;
}
}
} 公共无效surfaceCreated（SurfaceHolder持有人）{
//表面有被创建，获取摄像机，并告诉它来绘制。
尝试{
如果（mCamera！= NULL）{
如果（getResources（）。getConfiguration（）。方向== Configuration.ORIENTATION_LANDSCAPE）{
Global.orientation =横向;
Log.e（定向模式，+ Global.orientation）;
}否则如果（getResources（）。getConfiguration（）。方向== Configuration.ORIENTATION_PORTRAIT）{
mCamera.stop preVIEW（）;
mCamera.setDisplayOrientation（90）;
mCamera.start preVIEW（）;
Global.orientation =纵向;
Log.e（定向模式，+ Global.orientation）;
}
mCamera.set previewDisplay（支架）;
}
}赶上（IOException异常除外）{
Log.e（TAG，IOException异常造成集previewDisplay（）除外）;
mCamera.release（）;
mCamera = NULL;
}
} 公共无效surfaceDestroyed（SurfaceHolder持有人）{
//当我们回到地面就会被破坏，因此停止preVIEW。
如果（mCamera！= NULL）{
mCamera.stop preVIEW（）;
mCamera.set previewCallback（NULL）;
mCamera.release（）;
mCamera = NULL;
}
} 私人尺寸getOptimal previewSize（列表＆LT;尺寸和GT;的大小，INT W，INT高）{
最终双ASPECT_TOLERANCE = 0.2;
双targetRatio =（双）W / H;
如果（大小== NULL）返回NULL; 大小optimalSize = NULL;
双minDiff = Double.MAX_VALUE; INT targetHeight = H; //尝试找到一个大小匹配纵横比和尺寸
对于（尺寸大小：大小）{
双率=（双）size.width / size.height;
如果（Math.abs（比 - targetRatio）GT; ASPECT_TOLERANCE）继续;
如果（Math.abs（size.height - targetHeight）LT; minDiff）{
optimalSize =大小;
minDiff = Math.abs（size.height - targetHeight）;
}
} //找不到一个长宽比匹配，忽略此要求
如果（optimalSize == NULL）{
minDiff = Double.MAX_VALUE;
对于（尺寸大小：大小）{
如果（Math.abs（size.height - targetHeight）LT; minDiff）{
optimalSize =大小;
minDiff = Math.abs（size.height - targetHeight）;
}
}
}
返回optimalSize;
} 公共无效surfaceChanged（SurfaceHolder架，INT格式，诠释W，INT高）{
如果（mCamera！= NULL）{
Camera.Parameters参数= mCamera.getParameters（）;
parameters.set previewSize（M previewSize.width，男previewSize.height）; //闪光
如果（mContext.getPackageManager（）。hasSystemFeature（PackageManager.FEATURE_CAMERA_FLASH））
parameters.setFlashMode（Parameters.FLASH_MODE_AUTO）; requestLayout（）; mCamera.setParameters（参数）;
mCamera.start preVIEW（）; mCamera.autoFocus（NULL）;
}
}
}
XML文件的 take_picture.xml
＆LT;？XML版本=1.0编码=UTF-8＆GT？;
＆LT; LinearLayout中的xmlns：机器人=http://schemas.android.com/apk/res/android
机器人：ID =@ + ID /布局
机器人：layout_width =FILL_PARENT
机器人：layout_height =FILL_PARENT
机器人：方向=垂直＆GT;＆LT;的FrameLayout
机器人：ID =@ + ID / preVIEW
机器人：layout_width =FILL_PARENT
机器人：layout_height =0dp
机器人：layout_weight =1＆GT; ＆LT; SurfaceView
机器人：ID =@ + ID / surfaceView
机器人：layout_width =WRAP_CONTENT
机器人：layout_height =WRAP_CONTENT/＆GT; ＆LT; RelativeLayout的
机器人：layout_width =WRAP_CONTENT
机器人：layout_height =FILL_PARENT
机器人：方向=垂直＆GT; ＆LT;按钮
机器人：ID =@ + ID / buttonClick
机器人：layout_width =WRAP_CONTENT
机器人：layout_height =WRAP_CONTENT
机器人：layout_centerHorizontal =真
机器人：layout_centerVertical =真
机器人：背景=@绘制/ button_gradient/＆GT; ＆LT;按钮
机器人：ID =@ + ID / buttonCancel
机器人：layout_width =WRAP_CONTENT
机器人：layout_height =WRAP_CONTENT
机器人：layout_alignParentBottom =真
机器人：layout_alignParentLeft =真
机器人：文字=取消/＆GT;
＆LT; / RelativeLayout的＆GT;
＆LT; /＆的FrameLayout GT;＆LT; / LinearLayout中＆GT;
解决方案
如果您收到定制的相机问题，那么请使用意向的摄像头，低于code使图像旋转可能
位图BM = BitmapFactory.de codeStream（新的FileInputStream（MFILE），空，mBitmapFactoryOptions）;
位图位图= BM; ExifInterface EXIF =新ExifInterface（的ImagePath）; INT方向= exif.getAttributeInt（ExifInterface.TAG_ORIENTATION，1）; Log.e（ExifInteface .........，旋转=+方向）; // exif.setAttribute（ExifInterface.ORIENTATION_ROTATE_90，90）; Log.e（方向，+方向）;
矩阵M =新的Matrix（）; 如果（（取向== ExifInterface.ORIENTATION_ROTATE_180））{
m.postRotate（180）;
// m.postScale（（浮点）bm.getWidth（），（浮点）
// bm.getHeight（））;
//如果（微米。preRotate（90））{
Log.e（定向，+方向）;
位图= Bitmap.createBitmap（BM，0，0，bm.getWidth（），bm.getHeight（）中，m，真）;
返回位图;
}否则如果（方向== ExifInterface.ORIENTATION_ROTATE_90）{
m.postRotate（90）;
Log.e（定向，+方向）;
位图= Bitmap.createBitmap（BM，0，0，bm.getWidth（），bm.getHeight（）中，m，真）;
返回位图;
}否则如果（方向== ExifInterface.ORIENTATION_ROTATE_270）{
m.postRotate（270）;
Log.e（定向，+方向）;
位图= Bitmap.createBitmap（BM，0，0，bm.getWidth（），bm.getHeight（）中，m，真）;
返回位图; }
I got the help from code https://github.com/josnidhin/Android-Camera-Example
But facing some problems like:
- How to add functionalities of auto focus and flash. - solved in last edited code
- The when screen orientation is 270 so real view shows 180 degree rotated.
- Capture view is showing stretched.
The CODE from where i called the custom camera class
Camera cam = Camera.open();
if (null == cam)
{
// no camera exists
Intent i = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i, RESULT_LOAD_IMAGE);
}
else
{
cam.release();
Intent intent = new Intent(CreateList.this, CamTestActivity.class);
startActivityForResult(intent, TAKE_PICTURE);
}
Custom camera class CamTestActivity.class
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.hardware.Camera;
import android.hardware.Camera.AutoFocusCallback;
import android.hardware.Camera.PictureCallback;
import android.hardware.Camera.ShutterCallback;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnLongClickListener;
import android.view.ViewGroup.LayoutParams;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.FrameLayout;
import com.example.R;
public class CamTestActivity extends Activity {
private static final String TAG = "CamTestActivity";
Preview preview;
Button buttonClick, buttonCancel;
Camera camera;
String fileName;
Activity act;
Context ctx;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ctx = this;
act = this;
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.take_picture);
preview = new Preview(this, (SurfaceView) findViewById(R.id.surfaceView));
preview.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
((FrameLayout) findViewById(R.id.preview)).addView(preview);
preview.setKeepScreenOn(true);
buttonClick = (Button) findViewById(R.id.buttonClick);
buttonCancel = (Button) findViewById(R.id.buttonCancel);
buttonClick.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
camera.takePicture(shutterCallback, rawCallback, jpegCallback);
}
});
buttonClick.setOnLongClickListener(new OnLongClickListener() {
@Override
public boolean onLongClick(View arg0) {
camera.autoFocus(new AutoFocusCallback() {
@Override
public void onAutoFocus(boolean focus_flag, Camera cam) {
if (focus_flag)
cam.takePicture(shutterCallback, rawCallback, jpegCallback);
}
});
return true;
}
});
buttonCancel.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
finish();
}
});
}
@Override
protected void onResume() {
super.onResume();
// preview.camera = Camera.open();
camera = Camera.open(0);
camera.startPreview();
preview.setCamera(camera);
}
@Override
protected void onPause() {
if (camera != null) {
camera.stopPreview();
preview.setCamera(null);
camera.release();
camera = null;
}
super.onPause();
}
private void resetCam() {
camera.startPreview();
preview.setCamera(camera);
Intent i = new Intent();
i.putExtra("captured_img", fileName);
setResult(RESULT_OK, i);
finish();
}
ShutterCallback shutterCallback = new ShutterCallback() {
public void onShutter() {
// Log.d(TAG, "onShutter'd");
}
};
PictureCallback rawCallback = new PictureCallback() {
public void onPictureTaken(byte[] data, Camera camera) {
// Log.d(TAG, "onPictureTaken - raw");
}
};
PictureCallback jpegCallback = new PictureCallback() {
public void onPictureTaken(byte[] data, Camera camera) {
FileOutputStream outStream = null;
try {
// Write to SD Card
fileName = String.format(Environment.getExternalStorageDirectory() + "/FansRave_UploadDeal_Pic.jpg");
outStream = new FileOutputStream(fileName);
outStream.write(data);
outStream.close();
Log.d(TAG, "onPictureTaken - wrote bytes: " + data.length);
resetCam();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
Log.d(TAG, "onPictureTaken - jpeg");
}
};
}
Preview.class
import java.io.IOException;
import java.util.List;
import android.content.Context;
import android.content.pm.PackageManager;
import android.content.res.Configuration;
import android.hardware.Camera;
import android.hardware.Camera.Parameters;
import android.hardware.Camera.Size;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.ViewGroup;
class Preview extends ViewGroup implements SurfaceHolder.Callback {
private final String TAG = "Preview";
SurfaceView mSurfaceView;
SurfaceHolder mHolder;
Size mPreviewSize;
List<Size> mSupportedPreviewSizes;
Camera mCamera;
Context mContext;
Preview(Context context, SurfaceView sv) {
super(context);
mContext = context;
mSurfaceView = sv;
mHolder = mSurfaceView.getHolder();
mHolder.addCallback(this);
mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
public void setCamera(Camera camera) {
mCamera = camera;
if (mCamera != null) {
mSupportedPreviewSizes = mCamera.getParameters().getSupportedPreviewSizes();
requestLayout();
// get Camera parameters
Camera.Parameters params = mCamera.getParameters();
List<String> focusModes = params.getSupportedFocusModes();
if (focusModes.contains(Camera.Parameters.FOCUS_MODE_AUTO)) {
// set the focus mode
params.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO);
// set Camera parameters
mCamera.setParameters(params);
}
}
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
// We purposely disregard child measurements because act as a
// wrapper to a SurfaceView that center the camera preview instead
// of stretching it.
final int width = resolveSize(getSuggestedMinimumWidth(), widthMeasureSpec);
final int height = resolveSize(getSuggestedMinimumHeight(), heightMeasureSpec);
setMeasuredDimension(width, height);
if (mSupportedPreviewSizes != null) {
mPreviewSize = getOptimalPreviewSize(mSupportedPreviewSizes, width, height);
}
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
if (changed && getChildCount() > 0) {
final View child = getChildAt(0);
final int width = r - l;
final int height = b - t;
int previewWidth = width;
int previewHeight = height;
if (mPreviewSize != null) {
previewWidth = mPreviewSize.width;
previewHeight = mPreviewSize.height;
}
// Center the child SurfaceView within the parent.
if (width * previewHeight > height * previewWidth) {
final int scaledChildWidth = previewWidth * height / previewHeight;
child.layout((width - scaledChildWidth) / 2, 0, (width + scaledChildWidth) / 2, height);
} else {
final int scaledChildHeight = previewHeight * width / previewWidth;
child.layout(0, (height - scaledChildHeight) / 2, width, (height + scaledChildHeight) / 2);
}
}
}
public void surfaceCreated(SurfaceHolder holder) {
// The Surface has been created, acquire the camera and tell it where to draw.
try {
if (mCamera != null) {
if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) {
Global.orientation = "LANDSCAPE";
Log.e("Orientation mode", "" + Global.orientation);
} else if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
mCamera.stopPreview();
mCamera.setDisplayOrientation(90);
mCamera.startPreview();
Global.orientation = "PORTRAIT";
Log.e("Orientation mode", "" + Global.orientation);
}
mCamera.setPreviewDisplay(holder);
}
} catch (IOException exception) {
Log.e(TAG, "IOException caused by setPreviewDisplay()", exception);
mCamera.release();
mCamera = null;
}
}
public void surfaceDestroyed(SurfaceHolder holder) {
// Surface will be destroyed when we return, so stop the preview.
if (mCamera != null) {
mCamera.stopPreview();
mCamera.setPreviewCallback(null);
mCamera.release();
mCamera = null;
}
}
private Size getOptimalPreviewSize(List<Size> sizes, int w, int h) {
final double ASPECT_TOLERANCE = 0.2;
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;
}
public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
if (mCamera != null) {
Camera.Parameters parameters = mCamera.getParameters();
parameters.setPreviewSize(mPreviewSize.width, mPreviewSize.height);
// for flash
if (mContext.getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA_FLASH))
parameters.setFlashMode(Parameters.FLASH_MODE_AUTO);
requestLayout();
mCamera.setParameters(parameters);
mCamera.startPreview();
mCamera.autoFocus(null);
}
}
}
XML file take_picture.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/layout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<FrameLayout
android:id="@+id/preview"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1" >
<SurfaceView
android:id="@+id/surfaceView"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:orientation="vertical" >
<Button
android:id="@+id/buttonClick"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:background="@drawable/button_gradient" />
<Button
android:id="@+id/buttonCancel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:text="Cancel" />
</RelativeLayout>
</FrameLayout>
</LinearLayout>
解决方案
If you getting problem with custom camera then please use intent camera with below code so image rotation is possible
Bitmap bm = BitmapFactory.decodeStream(new FileInputStream(mFile), null, mBitmapFactoryOptions);
Bitmap bitmap = bm;
ExifInterface exif = new ExifInterface(ImagePath);
int orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, 1);
Log.e("ExifInteface .........", "rotation =" + orientation);
// exif.setAttribute(ExifInterface.ORIENTATION_ROTATE_90, 90);
Log.e("orientation", "" + orientation);
Matrix m = new Matrix();
if ((orientation == ExifInterface.ORIENTATION_ROTATE_180)) {
m.postRotate(180);
// m.postScale((float) bm.getWidth(), (float)
// bm.getHeight());
// if(m.preRotate(90)){
Log.e("in orientation", "" + orientation);
bitmap = Bitmap.createBitmap(bm, 0, 0, bm.getWidth(), bm.getHeight(), m, true);
return bitmap;
} else if (orientation == ExifInterface.ORIENTATION_ROTATE_90) {
m.postRotate(90);
Log.e("in orientation", "" + orientation);
bitmap = Bitmap.createBitmap(bm, 0, 0, bm.getWidth(), bm.getHeight(), m, true);
return bitmap;
} else if (orientation == ExifInterface.ORIENTATION_ROTATE_270) {
m.postRotate(270);
Log.e("in orientation", "" + orientation);
bitmap = Bitmap.createBitmap(bm, 0, 0, bm.getWidth(), bm.getHeight(), m, true);
return bitmap;
}
这篇关于自定义相机应用android的问题 - 旋转270，拉伸捕获视图，而不是让所有的功能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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