来自：http://blog.csdn.net/ryantang03/article/details/8656278
package com.example.listactivity; import java.io.ByteArrayOutputStream; import java.io.File; import com.example.model.ImageTools; import android.app.Activity; import android.app.AlertDialog; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.SharedPreferences; import android.content.SharedPreferences.Editor; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.net.Uri; import android.os.Bundle; import android.os.Environment; import android.provider.MediaStore; import android.provider.MediaStore.Images.Media; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.widget.ImageView; public class Paizhao extends Activity { private ImageView paizhao; private static final int SCALE = 5;//照片缩小比例 @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.paizhao); paizhao = (ImageView)this.findViewById(R.id.paizhao); paizhao.setOnClickListener(new TanDialog()); } class TanDialog implements OnClickListener{ @Override public void onClick(View v) { showPicturePicker(Paizhao.this); } } private void showPicturePicker(Context context) { AlertDialog.Builder dialog = new AlertDialog.Builder(context); dialog.setTitle("图片来源"); dialog.setNegativeButton("取消", null); dialog.setItems(new String[]{"拍照","相册"},new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { int REQUEST_CODE; switch(which){ //拍照 case 0: REQUEST_CODE =0; //启动相机 Intent openCameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); SharedPreferences share = getSharedPreferences("temp", Context.MODE_WORLD_WRITEABLE); ImageTools.deletePhotoAtPathAndName(Environment.getExternalStorageDirectory().getAbsolutePath(), share.getString("tempName", "")); String filename = String.valueOf(System.currentTimeMillis())+".jpg"; Editor editor = share.edit(); editor.putString("tempName", filename); editor.commit(); Uri imguri = Uri.fromFile(new File(Environment.getExternalStorageDirectory(),filename)); //开启 openCameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, imguri); startActivityForResult(openCameraIntent, REQUEST_CODE); break; //相册 case 1: Intent openAlbumIntent = new Intent(Intent.ACTION_GET_CONTENT); openAlbumIntent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "image/*"); startActivityForResult(openAlbumIntent, 0); break; } } } ); dialog.create().show(); } @Override //照相以后返回的照片 protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if(resultCode == RESULT_OK){ switch (requestCode) { //拍照 case 0: Uri uri = null; if(data != null){ uri = data.getData(); Log.e("----?", "data"); }else{ Log.e("----?", "file"); String fileName = getSharedPreferences("temp",Context.MODE_WORLD_WRITEABLE).getString("tempName", ""); uri = Uri.fromFile(new File(Environment.getExternalStorageDirectory(),fileName)); } //剪裁 cropImage(uri, 500, 500, 1); break; case 1: Bitmap photo = null; Uri photoUri = data.getData(); if (photoUri != null) { photo = BitmapFactory.decodeFile(photoUri.getPath()); } if (photo == null) { Bundle extra = data.getExtras(); if (extra != null) { photo = (Bitmap)extra.get("data"); ByteArrayOutputStream stream = new ByteArrayOutputStream(); photo.compress(Bitmap.CompressFormat.JPEG, 100, stream); } } paizhao.setImageBitmap(photo); break; } } } //截取图片 public void cropImage(Uri uri, int outputX, int outputY, int requestCode){ Intent intent = new Intent("com.android.camera.action.CROP"); intent.setDataAndType(uri, "image/*"); intent.putExtra("crop", "true"); intent.putExtra("aspectX", 1); intent.putExtra("aspectY", 1); intent.putExtra("outputX", outputX); intent.putExtra("outputY", outputY); intent.putExtra("outputFormat", "JPEG"); intent.putExtra("noFaceDetection", true); intent.putExtra("return-data", true); startActivityForResult(intent, requestCode); } }
ImageTools 类
package com.example.model; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import android.graphics.Bitmap; 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; /** * Tools for handler picture * * @author Ryan.Tang * */ public final class ImageTools { /** * Transfer drawable to bitmap * * @param drawable * @return */ public static Bitmap drawableToBitmap(Drawable drawable) { int w = drawable.getIntrinsicWidth(); int h = drawable.getIntrinsicHeight(); Bitmap.Config config = drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565; Bitmap bitmap = Bitmap.createBitmap(w, h, config); Canvas canvas = new Canvas(bitmap); drawable.setBounds(0, 0, w, h); drawable.draw(canvas); return bitmap; } /** * Bitmap to drawable * * @param bitmap * @return */ public static Drawable bitmapToDrawable(Bitmap bitmap) { return new BitmapDrawable(bitmap); } /** * Input stream to bitmap * * @param inputStream * @return * @throws Exception */ public static Bitmap inputStreamToBitmap(InputStream inputStream) throws Exception { return BitmapFactory.decodeStream(inputStream); } /** * Byte transfer to bitmap * * @param byteArray * @return */ public static Bitmap byteToBitmap(byte[] byteArray) { if (byteArray.length != 0) { return BitmapFactory .decodeByteArray(byteArray, 0, byteArray.length); } else { return null; } } /** * Byte transfer to drawable * * @param byteArray * @return */ public static Drawable byteToDrawable(byte[] byteArray) { ByteArrayInputStream ins = null; if (byteArray != null) { ins = new ByteArrayInputStream(byteArray); } return Drawable.createFromStream(ins, null); } /** * Bitmap transfer to bytes * * @param byteArray * @return */ public static byte[] bitmapToBytes(Bitmap bm) { byte[] bytes = null; if (bm != null) { ByteArrayOutputStream baos = new ByteArrayOutputStream(); bm.compress(Bitmap.CompressFormat.PNG, 100, baos); bytes = baos.toByteArray(); } return bytes; } /** * Drawable transfer to bytes * * @param drawable * @return */ public static byte[] drawableToBytes(Drawable drawable) { BitmapDrawable bitmapDrawable = (BitmapDrawable) drawable; Bitmap bitmap = bitmapDrawable.getBitmap(); byte[] bytes = bitmapToBytes(bitmap); ; return bytes; } /** * Base64 to byte[] // */ // public static byte[] base64ToBytes(String base64) throws IOException { // byte[] bytes = Base64.decode(base64); // return bytes; // } // // /** // * Byte[] to base64 // */ // public static String bytesTobase64(byte[] bytes) { // String base64 = Base64.encode(bytes); // return base64; // } /** * Create reflection images * * @param bitmap * @return */ public static Bitmap createReflectionImageWithOrigin(Bitmap bitmap) { final int reflectionGap = 4; int w = bitmap.getWidth(); int h = bitmap.getHeight(); Matrix matrix = new Matrix(); matrix.preScale(1, -1); Bitmap reflectionImage = Bitmap.createBitmap(bitmap, 0, h / 2, w, h / 2, matrix, false); Bitmap bitmapWithReflection = Bitmap.createBitmap(w, (h + h / 2), Config.ARGB_8888); Canvas canvas = new Canvas(bitmapWithReflection); canvas.drawBitmap(bitmap, 0, 0, null); Paint deafalutPaint = new Paint(); canvas.drawRect(0, h, w, h + reflectionGap, deafalutPaint); canvas.drawBitmap(reflectionImage, 0, h + reflectionGap, null); Paint paint = new Paint(); LinearGradient shader = new LinearGradient(0, bitmap.getHeight(), 0, bitmapWithReflection.getHeight() + reflectionGap, 0x70ffffff, 0x00ffffff, TileMode.CLAMP); paint.setShader(shader); // Set the Transfer mode to be porter duff and destination in paint.setXfermode(new PorterDuffXfermode(Mode.DST_IN)); // Draw a rectangle using the paint with our linear gradient canvas.drawRect(0, h, w, bitmapWithReflection.getHeight() + reflectionGap, paint); return bitmapWithReflection; } /** * Get rounded corner images * * @param bitmap * @param roundPx * 5 10 * @return */ public static Bitmap getRoundedCornerBitmap(Bitmap bitmap, float roundPx) { int w = bitmap.getWidth(); int h = bitmap.getHeight(); Bitmap output = Bitmap.createBitmap(w, h, Config.ARGB_8888); Canvas canvas = new Canvas(output); final int color = 0xff424242; final Paint paint = new Paint(); final Rect rect = new Rect(0, 0, w, h); final RectF rectF = new RectF(rect); 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; } /** * Resize the bitmap * * @param bitmap * @param width * @param height * @return */ public static Bitmap zoomBitmap(Bitmap bitmap, int width, int height) { int w = bitmap.getWidth(); int h = bitmap.getHeight(); Matrix matrix = new Matrix(); float scaleWidth = ((float) width / w); float scaleHeight = ((float) height / h); matrix.postScale(scaleWidth, scaleHeight); Bitmap newbmp = Bitmap.createBitmap(bitmap, 0, 0, w, h, matrix, true); return newbmp; } /** * Resize the drawable * @param drawable * @param w * @param h * @return */ public static Drawable zoomDrawable(Drawable drawable, int w, int h) { int width = drawable.getIntrinsicWidth(); int height = drawable.getIntrinsicHeight(); Bitmap oldbmp = drawableToBitmap(drawable); Matrix matrix = new Matrix(); float sx = ((float) w / width); float sy = ((float) h / height); matrix.postScale(sx, sy); Bitmap newbmp = Bitmap.createBitmap(oldbmp, 0, 0, width, height, matrix, true); return new BitmapDrawable(newbmp); } /** * Get images from SD card by path and the name of image * @param photoName * @return */ public static Bitmap getPhotoFromSDCard(String path,String photoName){ Bitmap photoBitmap = BitmapFactory.decodeFile(path + "/" +photoName +".png"); if (photoBitmap == null) { return null; }else { return photoBitmap; } } /** * Check the SD card * @return */ public static boolean checkSDCardAvailable(){ return android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED); } /** * Get image from SD card by path and the name of image * @param fileName * @return */ public static boolean findPhotoFromSDCard(String path,String photoName){ boolean flag = false; if (checkSDCardAvailable()) { File dir = new File(path); if (dir.exists()) { File folders = new File(path); File photoFile[] = folders.listFiles(); for (int i = 0; i < photoFile.length; i++) { String fileName = photoFile[i].getName().split("\.")[0]; if (fileName.equals(photoName)) { flag = true; } } }else { flag = false; } // File file = new File(path + "/" + photoName + ".jpg" ); // if (file.exists()) { // flag = true; // }else { // flag = false; // } }else { flag = false; } return flag; } /** * Save image to the SD card * @param photoBitmap * @param photoName * @param path */ public static void savePhotoToSDCard(Bitmap photoBitmap,String path,String photoName){ if (checkSDCardAvailable()) { File dir = new File(path); if (!dir.exists()){ dir.mkdirs(); } File photoFile = new File(path , photoName + ".png"); FileOutputStream fileOutputStream = null; try { fileOutputStream = new FileOutputStream(photoFile); if (photoBitmap != null) { if (photoBitmap.compress(Bitmap.CompressFormat.PNG, 100, fileOutputStream)) { fileOutputStream.flush(); // fileOutputStream.close(); } } } catch (FileNotFoundException e) { photoFile.delete(); e.printStackTrace(); } catch (IOException e) { photoFile.delete(); e.printStackTrace(); } finally{ try { fileOutputStream.close(); } catch (IOException e) { e.printStackTrace(); } } } } /** * Delete the image from SD card * @param context * @param path * file:///sdcard/temp.jpg */ public static void deleteAllPhoto(String path){ if (checkSDCardAvailable()) { File folder = new File(path); File[] files = folder.listFiles(); for (int i = 0; i < files.length; i++) { files[i].delete(); } } } public static void deletePhotoAtPathAndName(String path,String fileName){ if (checkSDCardAvailable()) { File folder = new File(path); File[] files = folder.listFiles(); for (int i = 0; i < files.length; i++) { System.out.println(files[i].getName()); if (files[i].getName().equals(fileName)) { files[i].delete(); } } } } }
AndroidManifest
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
