网站搜索推广方案论文,用ps如何做模板下载网站,济宁网站建设优化,微信如何建商城网站在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… 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 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 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 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 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 its 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.
