来个大神帮帮忙,这种String的值怎么读取

mmorss 2013-11-27 11:34:57
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mmorss 2013-11-27
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这个问题我已经解决了,只要把 155 String orientations = exifInterface.getAttribute(ExifInterface.TAG_MAKE); 改成String orientations = exifInterface.getAttribute(ExifInterface.TAG_MODEL);就可以拿到手机型号了
mmorss 2013-11-27
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引用 9 楼 develop_design_level 的回复:
看了你的155行,我自己写了一个

String hello = "Samsung";

进行了debug,也没见过你遇到的问题啊。

因为你的String的offset是0啊,我的是29,我的不是我写的,是api返回的
mmorss 2013-11-27
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引用 6 楼 develop_design_level 的回复:
上代码!你描述的,看不明白。
上了
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看了你的155行,我自己写了一个

String hello = "Samsung";

进行了debug,也没见过你遇到的问题啊。

mmorss 2013-11-27
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引用 7 楼 mmorss 的回复:
[quote=引用 5 楼 u011935764 的回复:] 楼主贴代码出来吧,这value存的就是变量的值,不明白什么意思
package com.yaxh.picCut;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

import android.graphics.Bitmap;
import android.graphics.Bitmap.CompressFormat;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.media.ExifInterface;
import android.util.Log;

public class BitmapUtil {
	/**
	 * 压缩图片 如果图片宽高有一个大于2000,并且压缩比例小于等于2,则调为4 如果图片宽高小于1000*1000则不压缩
	 * 
	 * @param orgImagePath
	 *            图片原路径
	 * @param desertImagePath
	 *            压缩图片保存路径
	 * @param scale
	 *            压缩比例,为2,4,8
	 * @return true,压缩成功;false,压缩失败。
	 */
	public static boolean compressImageFile(String orgImagePath, String desertImagePath, int scale) {
		CompressFormat format = Bitmap.CompressFormat.JPEG;
		OutputStream stream = null;
		Bitmap bitmap = null;
		boolean b = false;
		try {
			int quality = 100;
			File file = new File(orgImagePath);
			long fileSize = file.length();
			if (200 * 1024 < fileSize && fileSize <= 1024 * 1024) {
				quality = 75;
			} else if (1024 * 1024 < fileSize) {
				quality = 70;
			}
			BitmapFactory.Options o = new BitmapFactory.Options();
			o.inJustDecodeBounds = true;
			BitmapFactory.decodeFile(orgImagePath, o);
			// 如果图片宽高大于2000,并且压缩比例小于等于2,则调为4
			int width_tmp = o.outWidth, height_tmp = o.outHeight;
			if ((width_tmp > 2000 || height_tmp > 2000) && scale <= 2) {
				scale = 4;
			}
			// 如果图片小于1000*1000则不压缩
			if (width_tmp < 1000 && height_tmp < 1000) {
				scale = 1;
			}
			if (scale == 1 && quality == 100) {
				File file2 = new File(desertImagePath);
				boolean b2 = copyfile(file, file2);
				Log.i("xpf", "desertImagePath=" + desertImagePath);
				Log.i("xpf", "无损压缩" + b2 + "原图大小=" + file.length() / 1024 + "KB");
				return b2;
			}
			BitmapFactory.Options options = new BitmapFactory.Options();
			options.inSampleSize = scale;
			options.inPreferredConfig = Bitmap.Config.ARGB_8888;
			options.inDither = false;
			bitmap = BitmapFactory.decodeFile(orgImagePath, options);
			// 旋转图片
			int degrees = readPictureDegree(orgImagePath);
			if (degrees != 0 && bitmap != null) {
				Log.i("xpf", "图片旋转=" + degrees);
				Matrix m = new Matrix();
				m.setRotate(degrees, (float) bitmap.getWidth() / 2, (float) bitmap.getHeight() / 2);
				bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), m, true);
			}
			stream = new FileOutputStream(desertImagePath);
			if (bitmap != null) {
				b = bitmap.compress(format, quality, stream);
				File file2 = new File(desertImagePath);
				Log.i("xpf", "desertImagePath=" + desertImagePath);
				Log.i("xpf", "scale=" + scale + " 图片质量=" + quality + " 原图为" + width_tmp + "*" + height_tmp + " 压缩后为" + options.outWidth
						+ "*" + options.outHeight);
				Log.i("xpf", "原图大小=" + file.length() / 1024 + "KB" + " 压缩后图片=" + file2.length() / 1024 + "kb" + " 实际压缩率为:" + file2.length()
						* 100 / file.length() + "%  标准压缩率为:" + 100 / (scale * scale) + "%");
			}
			bitmap.recycle();
			bitmap = null;
			System.gc();
			if (stream != null) {
				stream.close();
			}
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return b;
	}

	/**
	 * 复制文件
	 * 
	 * @param fromFile
	 *             源文件路径
	 * @param toFile
	 *             目标文件路径
	 * @return true 复制成功;false 复制失败
	 */
	public static boolean copyfile(File fromFile, File toFile) {
		if (!fromFile.exists() || !fromFile.isFile() || !fromFile.canRead()) {
			return false;
		}
		try {
			if (!toFile.getParentFile().exists()) {
				toFile.getParentFile().mkdirs();
			}
			toFile.delete();
			java.io.FileInputStream fisfrom = new java.io.FileInputStream(fromFile);
			java.io.FileOutputStream fosto = new FileOutputStream(toFile);
			byte bt[] = new byte[1024];
			int c;
			while ((c = fisfrom.read(bt)) > 0) {
				fosto.write(bt, 0, c); // 将内容写到新文件当中
			}
			if (fisfrom != null) {
				fisfrom.close();
			}
			fosto.flush();
			if (fosto != null) {
				fosto.close();
			}
			return true;
		} catch (FileNotFoundException e) {
			e.printStackTrace();

		} catch (IOException e) {
			e.printStackTrace();
		}
		return false;
	}

	/**
	 * 获取图片的旋转角度
	 * 
	 * @Title: readPictureDegree
	 * @param path
	 * @return int
	 * @date 2013-11-27 上午9:22:33
	 */
	@SuppressWarnings("deprecation")
	private static int readPictureDegree(String path) {
		int degree = 0;
		try {

			ExifInterface exifInterface = new ExifInterface(path);
			//下面这个String的长度比实际的要小,怎么完全读出来?
			String orientations = exifInterface.getAttribute(ExifInterface.TAG_MAKE);
			StringBuilder sb=new StringBuilder();
//			StringBuilder sb = new StringBuilder();
//			for (int i = 0; i < 300; i++) {
//				sb.append(orientations.charAt(i));
//			}
//			Log.i("xpf", "sb=" + sb.toString());
			byte[] bs = orientations.getBytes();
			// byte[] bs2 = new byte[300];
			// orientations.getBytes(0, 300, bs2, 0);
			char[] chs = orientations.toCharArray();
			Log.i("xpf", "chs.leng=" + chs.length);
			Log.i("xpf", "chs=" + chs.toString());
			int orientation = exifInterface.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
			String string = "csdfa";
			switch (orientation) {
			case ExifInterface.ORIENTATION_ROTATE_90:
				degree = 90;
				break;
			case ExifInterface.ORIENTATION_ROTATE_180:
				degree = 180;
				break;
			case ExifInterface.ORIENTATION_ROTATE_270:
				degree = 270;
				break;
			default:
				degree = 0;
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
		return degree;
	}
}
[/quote] 在第155行
mmorss 2013-11-27
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引用 5 楼 u011935764 的回复:
楼主贴代码出来吧,这value存的就是变量的值,不明白什么意思
package com.yaxh.picCut;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

import android.graphics.Bitmap;
import android.graphics.Bitmap.CompressFormat;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.media.ExifInterface;
import android.util.Log;

public class BitmapUtil {
	/**
	 * 压缩图片 如果图片宽高有一个大于2000,并且压缩比例小于等于2,则调为4 如果图片宽高小于1000*1000则不压缩
	 * 
	 * @param orgImagePath
	 *            图片原路径
	 * @param desertImagePath
	 *            压缩图片保存路径
	 * @param scale
	 *            压缩比例,为2,4,8
	 * @return true,压缩成功;false,压缩失败。
	 */
	public static boolean compressImageFile(String orgImagePath, String desertImagePath, int scale) {
		CompressFormat format = Bitmap.CompressFormat.JPEG;
		OutputStream stream = null;
		Bitmap bitmap = null;
		boolean b = false;
		try {
			int quality = 100;
			File file = new File(orgImagePath);
			long fileSize = file.length();
			if (200 * 1024 < fileSize && fileSize <= 1024 * 1024) {
				quality = 75;
			} else if (1024 * 1024 < fileSize) {
				quality = 70;
			}
			BitmapFactory.Options o = new BitmapFactory.Options();
			o.inJustDecodeBounds = true;
			BitmapFactory.decodeFile(orgImagePath, o);
			// 如果图片宽高大于2000,并且压缩比例小于等于2,则调为4
			int width_tmp = o.outWidth, height_tmp = o.outHeight;
			if ((width_tmp > 2000 || height_tmp > 2000) && scale <= 2) {
				scale = 4;
			}
			// 如果图片小于1000*1000则不压缩
			if (width_tmp < 1000 && height_tmp < 1000) {
				scale = 1;
			}
			if (scale == 1 && quality == 100) {
				File file2 = new File(desertImagePath);
				boolean b2 = copyfile(file, file2);
				Log.i("xpf", "desertImagePath=" + desertImagePath);
				Log.i("xpf", "无损压缩" + b2 + "原图大小=" + file.length() / 1024 + "KB");
				return b2;
			}
			BitmapFactory.Options options = new BitmapFactory.Options();
			options.inSampleSize = scale;
			options.inPreferredConfig = Bitmap.Config.ARGB_8888;
			options.inDither = false;
			bitmap = BitmapFactory.decodeFile(orgImagePath, options);
			// 旋转图片
			int degrees = readPictureDegree(orgImagePath);
			if (degrees != 0 && bitmap != null) {
				Log.i("xpf", "图片旋转=" + degrees);
				Matrix m = new Matrix();
				m.setRotate(degrees, (float) bitmap.getWidth() / 2, (float) bitmap.getHeight() / 2);
				bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), m, true);
			}
			stream = new FileOutputStream(desertImagePath);
			if (bitmap != null) {
				b = bitmap.compress(format, quality, stream);
				File file2 = new File(desertImagePath);
				Log.i("xpf", "desertImagePath=" + desertImagePath);
				Log.i("xpf", "scale=" + scale + " 图片质量=" + quality + " 原图为" + width_tmp + "*" + height_tmp + " 压缩后为" + options.outWidth
						+ "*" + options.outHeight);
				Log.i("xpf", "原图大小=" + file.length() / 1024 + "KB" + " 压缩后图片=" + file2.length() / 1024 + "kb" + " 实际压缩率为:" + file2.length()
						* 100 / file.length() + "%  标准压缩率为:" + 100 / (scale * scale) + "%");
			}
			bitmap.recycle();
			bitmap = null;
			System.gc();
			if (stream != null) {
				stream.close();
			}
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return b;
	}

	/**
	 * 复制文件
	 * 
	 * @param fromFile
	 *             源文件路径
	 * @param toFile
	 *             目标文件路径
	 * @return true 复制成功;false 复制失败
	 */
	public static boolean copyfile(File fromFile, File toFile) {
		if (!fromFile.exists() || !fromFile.isFile() || !fromFile.canRead()) {
			return false;
		}
		try {
			if (!toFile.getParentFile().exists()) {
				toFile.getParentFile().mkdirs();
			}
			toFile.delete();
			java.io.FileInputStream fisfrom = new java.io.FileInputStream(fromFile);
			java.io.FileOutputStream fosto = new FileOutputStream(toFile);
			byte bt[] = new byte[1024];
			int c;
			while ((c = fisfrom.read(bt)) > 0) {
				fosto.write(bt, 0, c); // 将内容写到新文件当中
			}
			if (fisfrom != null) {
				fisfrom.close();
			}
			fosto.flush();
			if (fosto != null) {
				fosto.close();
			}
			return true;
		} catch (FileNotFoundException e) {
			e.printStackTrace();

		} catch (IOException e) {
			e.printStackTrace();
		}
		return false;
	}

	/**
	 * 获取图片的旋转角度
	 * 
	 * @Title: readPictureDegree
	 * @param path
	 * @return int
	 * @date 2013-11-27 上午9:22:33
	 */
	@SuppressWarnings("deprecation")
	private static int readPictureDegree(String path) {
		int degree = 0;
		try {

			ExifInterface exifInterface = new ExifInterface(path);
			//下面这个String的长度比实际的要小,怎么完全读出来?
			String orientations = exifInterface.getAttribute(ExifInterface.TAG_MAKE);
			StringBuilder sb=new StringBuilder();
//			StringBuilder sb = new StringBuilder();
//			for (int i = 0; i < 300; i++) {
//				sb.append(orientations.charAt(i));
//			}
//			Log.i("xpf", "sb=" + sb.toString());
			byte[] bs = orientations.getBytes();
			// byte[] bs2 = new byte[300];
			// orientations.getBytes(0, 300, bs2, 0);
			char[] chs = orientations.toCharArray();
			Log.i("xpf", "chs.leng=" + chs.length);
			Log.i("xpf", "chs=" + chs.toString());
			int orientation = exifInterface.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
			String string = "csdfa";
			switch (orientation) {
			case ExifInterface.ORIENTATION_ROTATE_90:
				degree = 90;
				break;
			case ExifInterface.ORIENTATION_ROTATE_180:
				degree = 180;
				break;
			case ExifInterface.ORIENTATION_ROTATE_270:
				degree = 270;
				break;
			default:
				degree = 0;
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
		return degree;
	}
}
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上代码!你描述的,看不明白。
时光清浅 2013-11-27
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楼主贴代码出来吧,这value存的就是变量的值,不明白什么意思
mmorss 2013-11-27
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我怎么读取下面的312个字符串啊?
mmorss 2013-11-27
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就显示只有7个字符,但实际上有300多个,怎么读取实际的值,或者设置String的count,offset??
末日哥 2013-11-27
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什么意思说清楚啊
etfired 2013-11-27
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要读成什么样子?

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