我的Android基础框架搭建，用于学习.zip

package com.example.wangzw.mybase.utils; import android.app.Activity; import android.content.ContentResolver; import android.content.Context; import android.content.Intent; import android.database.Cursor; import android.graphics.Bitmap; import android.graphics.Bitmap.CompressFormat; import android.graphics.Bitmap.Config; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.LinearGradient; import android.graphics.Matrix; import android.graphics.Paint; import android.graphics.PixelFormat; import android.graphics.PorterDuff.Mode; import android.graphics.PorterDuffXfermode; import android.graphics.Rect; import android.graphics.RectF; import android.graphics.Shader.TileMode; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.Drawable; import android.net.Uri; import android.os.Environment; import android.provider.MediaStore; import android.provider.MediaStore.MediaColumns; import android.text.TextUtils; import android.util.DisplayMetrics; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.sql.Timestamp; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Locale; /** * Created by goldze on 2017/7/17. * 图片相关工具类,包含图片压缩,图片缩放,图片裁剪等功能 */ public class ImageUtils { private static final float MAX_SIZE = 200;//接受的最大图片尺寸为200k，200k以上的图片压缩到200k一下 public final static String SDCARD_MNT = "/mnt/sdcard"; public final static String SDCARD = "/sdcard"; /** 请求相册 */ public static final int REQUEST_CODE_GETIMAGE_BYSDCARD = 0; public static final int REQUEST_CODE_GETIMAGE_BYSDCARD_info = 4; /** 请求相机 */ public static final int REQUEST_CODE_GETIMAGE_BYCAMERA = 1; /** 请求裁剪 */ public static final int REQUEST_CODE_GETIMAGE_BYCROP = 2; /** 从图片浏览界面发送动弹 */ public static final int REQUEST_CODE_GETIMAGE_IMAGEPAVER = 3; /** * 写图片文件 在Android系统中，文件保存在 /data/data/PACKAGE_NAME/files 目录下 * * @throws IOException */ public static void saveImage(Context context, String fileName, Bitmap bitmap) throws IOException { saveImage(context, fileName, bitmap, 100); } public static void saveImage(Context context, String fileName, Bitmap bitmap, int quality) throws IOException { if (bitmap == null || fileName == null || context == null) return; FileOutputStream fos = context.openFileOutput(fileName, Context.MODE_PRIVATE); ByteArrayOutputStream stream = new ByteArrayOutputStream(); bitmap.compress(CompressFormat.JPEG, quality, stream); byte[] bytes = stream.toByteArray(); fos.write(bytes); fos.close(); } /** * 写图片文件到SD卡 * * @throws IOException */ public static void saveImageToSD(Context ctx, String filePath, Bitmap bitmap, int quality) throws IOException { if (bitmap != null) { File file = new File(filePath.substring(0, filePath.lastIndexOf(File.separator))); if (!file.exists()) { file.mkdirs(); } BufferedOutputStream bos = new BufferedOutputStream( new FileOutputStream(filePath)); bitmap.compress(CompressFormat.JPEG, quality, bos); bos.flush(); bos.close(); if (ctx != null) { scanPhoto(ctx, filePath); } } } public static void saveBackgroundImage(Context ctx, String filePath, Bitmap bitmap, int quality) throws IOException { if (bitmap != null) { File file = new File(filePath.substring(0, filePath.lastIndexOf(File.separator))); if (!file.exists()) { file.mkdirs(); } BufferedOutputStream bos = new BufferedOutputStream( new FileOutputStream(filePath)); bitmap.compress(CompressFormat.PNG, quality, bos); bos.flush(); bos.close(); if (ctx != null) { scanPhoto(ctx, filePath); } } } /** * 让Gallery上能马上看到该图片 */ private static void scanPhoto(Context ctx, String imgFileName) { Intent mediaScanIntent = new Intent( Intent.ACTION_MEDIA_SCANNER_SCAN_FILE); File file = new File(imgFileName); Uri contentUri = Uri.fromFile(file); mediaScanIntent.setData(contentUri); ctx.sendBroadcast(mediaScanIntent); } /** * 获取bitmap * * @param context * @param fileName * @return */ public static Bitmap getBitmap(Context context, String fileName) { FileInputStream fis = null; Bitmap bitmap = null; try { fis = context.openFileInput(fileName); bitmap = BitmapFactory.decodeStream(fis); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (OutOfMemoryError e) { e.printStackTrace(); } finally { try { fis.close(); } catch (Exception e) { } } return bitmap; } /** * 获取bitmap * * @param filePath * @return */ public static Bitmap getBitmapByPath(String filePath) { return getBitmapByPath(filePath, null); } public static Bitmap getBitmapByPath(String filePath, BitmapFactory.Options opts) { FileInputStream fis = null; Bitmap bitmap = null; try { File file = new File(filePath); fis = new FileInputStream(file); bitmap = BitmapFactory.decodeStream(fis, null, opts); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (OutOfMemoryError e) { e.printStackTrace(); } finally { try { fis.close(); } catch (Exception e) { } } return bitmap; } /** * 获取bitmap * * @param file * @return */ public static Bitmap getBitmapByFile(File file) { FileInputStream fis = null; Bitmap bitmap = null; try { fis = new FileInputStream(file); bitmap = BitmapFactory.decodeStream(fis); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (OutOfMemoryError e) { e.printStackTrace(); } finally { try { fis.close(); } catch (Exception e) { } } return bitmap; } /** * 使用当前时间戳拼接一个唯一的文件名 * * @param * @return */ public static String getTempFileName() { SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd_HH-mm-ss_SS"); String fileName = format.format(new Timestamp(System .currentTimeMillis())); return fileName; } /** * 获取照相机使用的目录 * * @return */ public static String getCamerPath() { return Environment.getExternalStorageDirectory() + File.separator + "FounderNews" + File.separator; } /** * 判断当前Url是否标准的content://样式，如果不是，则返回绝对路径