一站式解决,Android 拍照 图库的各种问题

 

　　在android开发中, 在一些编辑个人信息的时候,经常会有头像这么一个东西,就两个方面,调用系统相机拍照,调用系统图库获取图片.但是往往会遇到各种问题:

1.oom 

2.图片方向不对

3.activity result 的时候data == null

4.调用图库的时候没找到软件

嘿嘿..开代码:

首先是调用系统拍照,和图库的代码

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package com.chzh.fitter.util;     import java.io.File;   import android.app.Activity; import android.content.Context; import android.content.Intent; import android.database.Cursor; import android.net.Uri; import android.provider.MediaStore; import android.widget.Toast;   //在onActivityResult方法中根据requestCode和resultCode来获取当前拍照的图片地址。 //注意：这里有个问题，在有些机型当中（如SamsungI939、note2等）遇见了当拍照并存储之后，intent当中得到的data为空： /**  * data = null 的情况主要是由于拍照的时候横屏了,导致重新create, 普通的解决方法可以在sharedpreference里面保存拍照文件的路径(onSaveInstance保存),  * 在onRestoreSaveInstance里面在获取出来.  * 最简单的可以用fileUtil 里面的一个静态变量保存起来..  * */       public class CameraUtil {       private static final String IMAGE_TYPE = "image/*";       private Context mContext;       public CameraUtil(Context context) {         mContext = context;     }       /**      * 打开照相机      * @param activity 当前的activity      * @param requestCode 拍照成功时activity forResult 的时候的requestCode      * @param photoFile 拍照完毕时,图片保存的位置      */     public void openCamera(Activity activity, int requestCode, File photoFile) {         Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);         intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photoFile));         activity.startActivityForResult(intent, requestCode);     }       /**      * 本地照片调用      * @param activity      * @param requestCode      */     public void openPhotos(Activity activity, int requestCode) {         if (openPhotosNormal(activity, requestCode) && openPhotosBrowser(activity, requestCode) && openPhotosFinally());     }       /**      * PopupMenu打开本地相册.      */     private boolean openPhotosNormal(Activity activity, int actResultCode) {         Intent intent = new Intent(Intent.ACTION_PICK, null);         intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,                 IMAGE_TYPE);         try {             activity.startActivityForResult(intent, actResultCode);           } catch (android.content.ActivityNotFoundException e) {               return true;         }           return false;     }       /**      * 打开其他的一文件浏览器,如果没有本地相册的话      */     private boolean openPhotosBrowser(Activity activity, int requestCode) {         Toast.makeText(mContext, "没有相册软件，运行文件浏览器", Toast.LENGTH_LONG).show();         Intent intent = new Intent(Intent.ACTION_GET_CONTENT); // "android.intent.action.GET_CONTENT"         intent.setType(IMAGE_TYPE); // 查看类型 String IMAGE_UNSPECIFIED =                                     // "image/*";         Intent wrapperIntent = Intent.createChooser(intent, null);         try {             activity.startActivityForResult(wrapperIntent, requestCode);         } catch (android.content.ActivityNotFoundException e1) {             return true;         }         return false;     }       /**      * 这个是找不到相关的图片浏览器,或者相册      */     private boolean openPhotosFinally() {         Toast.makeText(mContext, "您的系统没有文件浏览器或则相册支持,请安装！", Toast.LENGTH_LONG).show();         return false;     }       /**      * 获取从本地图库返回来的时候的URI解析出来的文件路径      * @return      */     public static String getPhotoPathByLocalUri(Context context, Intent data) {         Uri selectedImage = data.getData();         String[] filePathColumn = { MediaStore.Images.Media.DATA };         Cursor cursor = context.getContentResolver().query(selectedImage,                 filePathColumn, null, null, null);         cursor.moveToFirst();         int columnIndex = cursor.getColumnIndex(filePathColumn[0]);         String picturePath = cursor.getString(columnIndex);         cursor.close();         return picturePath;     }   }

　　接下来是解决oom的

　　

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package com.chzh.fitter.util;   import java.io.FileDescriptor; import java.io.FileInputStream; import java.io.IOException;   import android.graphics.Bitmap; import android.graphics.Bitmap.Config; import android.graphics.BitmapFactory; import android.graphics.BitmapFactory.Options; import android.graphics.Canvas; import android.graphics.Matrix; import android.graphics.Paint; import android.graphics.PorterDuff.Mode; import android.graphics.PorterDuffXfermode; import android.graphics.Rect; import android.graphics.RectF; import android.media.ExifInterface; import android.net.Uri; import android.util.Log; import android.widget.ImageView;   import com.androidquery.util.AQUtility;   /**  * @author jarrahwu  *  */ public class ImageUtil {       /**      * Utility method for downsampling images.      *      * @param path      *            the file path      * @param data      *            if file path is null, provide the image data directly      * @param target      *            the target dimension      * @param isWidth      *            use width as target, otherwise use the higher value of height      *            or width      * @param round      *            corner radius      * @return the resized image      */     public static Bitmap getResizedImage(String path, byte[] data, int target,             boolean isWidth, int round) {           Options options = null;           if (target > 0) {               Options info = new Options();             info.inJustDecodeBounds = true;             //设置这两个属性可以减少内存损耗             info.inInputShareable = true;             info.inPurgeable = true;               decode(path, data, info);               int dim = info.outWidth;             if (!isWidth)                 dim = Math.max(dim, info.outHeight);             int ssize = sampleSize(dim, target);               options = new Options();             options.inSampleSize = ssize;           }           Bitmap bm = null;         try {             bm = decode(path, data, options);         } catch (OutOfMemoryError e) {             L.red(e.toString());             e.printStackTrace();         }           if (round > 0) {             bm = getRoundedCornerBitmap(bm, round);         }           return bm;       }       private static Bitmap decode(String path, byte[] data,             BitmapFactory.Options options) {           Bitmap result = null;           if (path != null) {               result = decodeFile(path, options);           } else if (data != null) {               // AQUtility.debug("decoding byte[]");               result = BitmapFactory.decodeByteArray(data, 0, data.length,                     options);           }           if (result == null && options != null && !options.inJustDecodeBounds) {             AQUtility.debug("decode image failed", path);         }           return result;     }       private static Bitmap decodeFile(String path, BitmapFactory.Options options) {           Bitmap result = null;           if (options == null) {             options = new Options();         }           options.inInputShareable = true;         options.inPurgeable = true;           FileInputStream fis = null;           try {               fis = new FileInputStream(path);               FileDescriptor fd = fis.getFD();               // AQUtility.debug("decoding file");             // AQUtility.time("decode file");               result = BitmapFactory.decodeFileDescriptor(fd, null, options);               // AQUtility.timeEnd("decode file", 0);         } catch (IOException e) {             Log.error("TAG",e.toString())         } finally {             fis.close()         }           return result;       }       private static int sampleSize(int width, int target) {           int result = 1;           for (int i = 0; i < 10; i++) {               if (width < target * 2) {                 break;             }               width = width / 2;             result = result * 2;           }           return result;     }       /**      * 获取圆角的bitmap      * @param bitmap      * @param pixels      * @return      */     private static Bitmap getRoundedCornerBitmap(Bitmap bitmap, int pixels) {           Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),                 bitmap.getHeight(), Config.ARGB_8888);         Canvas canvas = new Canvas(output);           final int color = 0xff424242;         final Paint paint = new Paint();         final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());         final RectF rectF = new RectF(rect);         final float roundPx = pixels;           paint.setAntiAlias(true);         canvas.drawARGB(0, 0, 0, 0);         paint.setColor(color);         canvas.drawRoundRect(rectF, roundPx, roundPx, paint);           paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));         canvas.drawBitmap(bitmap, rect, rect, paint);           return output;     }       /**      * auto fix the imageOrientation      * @param bm source      * @param iv imageView  if set invloke it's setImageBitmap() otherwise do nothing      * @param uri image Uri if null user path      * @param path image path if null use uri      */     public static Bitmap autoFixOrientation(Bitmap bm, ImageView iv, Uri uri,String path) {         int deg = 0;         try {             ExifInterface exif = null;             if (uri == null) {                 exif = new ExifInterface(path);             }             else if (path == null) {                 exif = new ExifInterface(uri.getPath());             }               if (exif == null) {                 Log.error("TAG","exif is null check your uri or path");                 return bm;             }               String rotate = exif.getAttribute(ExifInterface.TAG_ORIENTATION);             int rotateValue = Integer.parseInt(rotate);             System.out.println("orientetion : " + rotateValue);             switch (rotateValue) {             case ExifInterface.ORIENTATION_ROTATE_90:                 deg = 90;                 break;             case ExifInterface.ORIENTATION_ROTATE_180:                 deg = 180;                 break;             case ExifInterface.ORIENTATION_ROTATE_270:                 deg = 270;                 break;             default:                 deg = 0;                 break;             }         } catch (Exception ee) {             Log.d("catch img error", "return");             if(iv != null)             iv.setImageBitmap(bm);             return bm;         }         Matrix m = new Matrix();         m.preRotate(deg);         bm = Bitmap.createBitmap(bm, 0, 0, bm.getWidth(), bm.getHeight(), m, true);           //bm = Compress(bm, 75);         if(iv != null)             iv.setImageBitmap(bm);         return bm;     }     }

　　

　　如果想要代码Demo的话,可以留言.有什么坑爹的地方,多多拍砖..over.