图片剪切.docx

一：主布局界面二：点击控件触发事件后效果图三：拍照完之后效果图四：裁剪界面效果图五：点击相册后返回的图片效果图六：裁剪完从相册PICK的保存后的效果图下面直接来看下主控制类代码，如下：1.package com.xiaoma.piccut.demo;2.3.import java.io.File;4.import android.app.Activity;5.import android.app.AlertDialog;6.import android.content.DialogInterface;7.import android.content.Intent;8.import android.graphics.Bitmap;9.import android.graphics.drawable.BitmapDrawable;10.import android.graphics.drawable.Drawable;11.import .Uri;12.import android.os.Bundle;13.import android.os.Environment;14.import vider.MediaStore;15.import android.view.View;16.import android.view.View.OnClickListener;17.import android.widget.Button;18.import android.widget.ImageButton;19.import android.widget.ImageView;20./*21. * Title: PicCutDemoActivity.java22. * Package com.xiaoma.piccut.demo23. * Description: 图片裁剪功能测试24. * author XiaoMa25. */26.public class PicCutDemoActivity extends Activity implements OnClickListener 27.28. private ImageButton ib = null;29. private ImageView iv = null;30. private Button btn = null;31. private String tp = null;32.33.34. /* Called when the activity is first created. */35. Override36. public void onCreate(Bundle savedInstanceState) 37. super.onCreate(savedInstanceState);38. setContentView(R.layout.main);39. /初始化40. init();41. 42.43. /*44. * 初始化方法实现45. */46. private void init() 47. ib = (ImageButton) findViewById(R.id.imageButton1);48. iv = (ImageView) findViewById(R.id.imageView1);49. btn = (Button) findViewById(R.id.button1);50. ib.setOnClickListener(this);51. iv.setOnClickListener(this);52. btn.setOnClickListener(this);53. 54.55.56. /*57. * 控件点击事件实现58. *59. * 因为有朋友问不同控件的背景图裁剪怎么实现，60. * 我就在这个地方用了三个控件，只为了自己记录学习61. * 大家觉得没用的可以跳过啦62. */63. Override64. public void onClick(View v) 65. switch (v.getId() 66. case R.id.imageButton1:67. ShowPickDialog();68. break;69. case R.id.imageView1:70. ShowPickDialog();71. break;72. case R.id.button1:73. ShowPickDialog();74. break;75.76. default:77. break;78. 79. 80.81. /*82. * 选择提示对话框83. */84. private void ShowPickDialog() 85. new AlertDialog.Builder(this)86. .setTitle(设置头像.)87. .setNegativeButton(相册, new DialogInterface.OnClickListener() 88. public void onClick(DialogInterface dialog, int which) 89. dialog.dismiss();90. /*91. * 刚开始，我自己也不知道ACTION_PICK是干嘛的，后来直接看Intent源码，92. * 可以发现里面很多东西，Intent是个很强大的东西，大家一定仔细阅读下93. */94. Intent intent = new Intent(Intent.ACTION_PICK, null);95.96. /*97. * 下面这句话，与其它方式写是一样的效果，如果：98. * intent.setData(MediaStore.Images.Media.EXTERNAL_CONTENT_URI);99. * intent.setType(image/*);设置数据类型100. * 如果朋友们要限制上传到服务器的图片类型时可以直接写如：image/jpeg 、 image/png等的类型101. * 这个地方小马有个疑问，希望高手解答下：就是这个数据URI与类型为什么要分两种形式来写呀？有什么区别？102. */103. intent.setDataAndType(104. MediaStore.Images.Media.EXTERNAL_CONTENT_URI,105. image/*);106. startActivityForResult(intent, 1);107.108. 109. )110. .setPositiveButton(拍照, new DialogInterface.OnClickListener() 111. public void onClick(DialogInterface dialog, int whichButton) 112. dialog.dismiss();113. /*114. * 下面这句还是老样子，调用快速拍照功能，至于为什么叫快速拍照，大家可以参考如下官方115. * 文档，you_sdk_path/docs/guide/topics/media/camera.html116. * 我刚看的时候因为太长就认真看，其实是错的，这个里面有用的太多了，所以大家不要认为117. * 官方文档太长了就不看了，其实是错的，这个地方小马也错了，必须改正118. */119. Intent intent = new Intent(120. MediaStore.ACTION_IMAGE_CAPTURE);121. /下面这句指定调用相机拍照后的照片存储的路径122. intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri123. .fromFile(new File(Environment124. .getExternalStorageDirectory(),125. xiaoma.jpg);126. startActivityForResult(intent, 2);127. 128. ).show();129. 130.131. Override132. protected void onActivityResult(int requestCode, int resultCode, Intent data) 133. switch (requestCode) 134. / 如果是直接从相册获取135. case 1:136. startPhotoZoom(data.getData();137. break;138. / 如果是调用相机拍照时139. case 2:140. File temp = new File(Environment.getExternalStorageDirectory()141. + /xiaoma.jpg);142. startPhotoZoom(Uri.fromFile(temp);143. break;144. / 取得裁剪后的图片145. case 3:146. /*147. * 非空判断大家一定要验证，如果不验证的话，148. * 在剪裁之后如果发现不满意，要重新裁剪，丢弃149. * 当前功能时，会报NullException，小马只150. * 在这个地方加下，大家可以根据不同情况在合适的151. * 地方做判断处理类似情况152. *153. */154. if(data != null)155. setPicToView(data);156. 157. break;158. default:159. break;160.161. 162. super.onActivityResult(requestCode, resultCode, data);163. 164.165. /*166. * 裁剪图片方法实现167. * param uri168. */169. public void startPhotoZoom(Uri uri) 170. /*171. * 至于下面这个Intent的ACTION是怎么知道的，大家可以看下自己路径下的如下网页172. * yourself_sdk_path/docs/reference/android/content/Intent.html173. * 直接在里面Ctrl+F搜：CROP ，之前小马没仔细看过，其实安卓系统早已经有自带图片裁剪功能,174. * 是直接调本地库的，小马不懂C C+ 这个不做详细了解去了，有轮子就用轮子，不再研究轮子是怎么175. * 制做的了.吼吼176. */177. Intent intent = new Intent(com.android.camera.action.CROP);178. intent.setDataAndType(uri, image/*);179. /下面这个crop=true是设置在开启的Intent中设置显示的VIEW可裁剪180. intent.putExtra(crop, true);181. / aspectX aspectY 是宽高的比例182. intent.putExtra(aspectX, 1);183. intent.putExtra(aspectY, 1);184. / outputX outputY 是裁剪图片宽高185. intent.putExtra(outputX, 150);186. intent.putExtra(outputY, 150);187. intent.putExtra(return-data, true);188. startActivityForResult(intent, 3);189. 190.191. /*192. * 保存裁剪之后的图片数据193. * param picdata194. */195. private void setPicToView(Intent picdata) 196. Bundle extras = picdata.getExtras();197. if (extras != null) 198. Bitmap photo = extras.getParcelable(data);199. Drawable drawable = new BitmapDrawable(photo);200.201. /*202. * 下面注释的方法是将裁剪之后的图片以Base64Coder的字符方式上203. * 传到服务器，QQ头像上传采用的方法跟这个类似204. */205.206. /*ByteArrayOutputStream stream = new ByteArrayOutputStream();207. press(Bitmap.CompressFormat.JPEG, 60, stream);208. byte b = stream.toByteArray();209. / 将图片流以字符串形式存储下来210.211. tp = new String(Base64Coder.encodeLines(b);212. 这个地方大家可以写下给服务器上传图片的实现，直接把tp直接上传就可以了，213. 服务器处理的方法是服务器那边的事了，吼吼214.215. 如果下载到的服务器的数据还是以Base64Coder的形式的话，可以用以下方式转换216. 为我们可以用的图片类型就OK啦.吼吼217. Bitmap dBitmap = BitmapFactory.decodeFile(tp);218. Drawable drawable = new BitmapDrawable(dBitmap);219. */220. ib.setBackgroundDrawable(drawable);221. iv.setBackgroundDrawable(drawable);222. 223. 224.225.下面来看下裁剪中用到的类，大家详细看下头注释：1.package com.xiaoma.piccut.demo;.6./*7. * 下面这些注释是下载这个类的时候本来就有的，本来要删除的，但看了下竟然是license，吼吼，8. * 好东西，留在注释里，以备不时之用，大家有需要加license的可以到下面的网址找哦9. */10.11./EPL, Eclipse Public License, V1.0 or later, /legal12./LGPL, GNU Lesser General Public License, V2.1 or later, /licenses/lgpl.html13./GPL, GNU General Public License, V2 or later, /licenses/gpl.html14./AL, Apache License, V2.0 or later, /licenses15./BSD, BSD License, /licenses/bsd-license.php16./*17.* A Base64 encoder/decoder.18.*19.* 20.* This class is used to encode and decode data in Base64 format as described in RFC 1521.21.*22.* 23.* Project home page: /base64coder/java24.* Author: Christian dHeureuse, Inventec Informatik AG, Zurich, Switzerland25.* Multi-licensed: EPL / LGPL / GPL / AL / BSD.26.*/27.28./*29. * 这个类在上面注释的网址中有，大家可以自行下载下，也可以直接用这个，30. * 公开的Base64Coder类（不用深究它是怎么实现的，31. * 还是那句话，有轮子直接用轮子），好用的要死人了.32. * 小马也很无耻的引用了这个网址下的东东，吼吼.33.* Title: Base64Coder.java34.* Package com.xiaoma.piccut.demo35.* Description: TODO36.* author XiaoMa37. */38.39.public class Base64Coder 40.41./The line separator string of the operating system.42.private static final String systemLineSeparator = System.getProperty(line.separator);43.44./Mapping table from 6-bit nibbles to Base64 characters.45.private static char map1 = new char64;46.static 47. int i=0;48. for (char c=A; c=Z; c+) map1i+ = c;49. for (char c=a; c=z; c+) map1i+ = c;50. for (char c=0; c=9; c+) map1i+ = c;51. map1i+ = +; map1i+ = /; 52.53./Mapping table from Base64 characters to 6-bit nibbles.54.private static byte map2 = new byte128;55.static 56. for (int i=0; imap2.length; i+) map2i = -1;57. for (int i=0; i64; i+) map2map1i = (byte)i; 58.59./*60.* Encodes a string into Base64 format.61.* No blanks or line breaks are inserted.62.* param s A String to be encoded.63.* return A String containing the Base64 encoded data.64.*/65.public static String encodeString (String s) 66.return new String(encode(s.getBytes(); 67.68./*69.* Encodes a byte array into Base 64 format and breaks the output into lines of 76 characters.70.* This method is compatible with sun.misc.BASE64Encoder.encodeBuffer(byte).71.* param in An array containing the data bytes to be encoded.72.* return A String containing the Base64 encoded data, broken into lines.73.*/74.public static String encodeLines (byte in) 75.return encodeLines(in, 0, in.length, 76, systemLineSeparator); 76.77./*78.* Encodes a byte array into Base 64 format and breaks the output into lines.79.* param in An array containing the data bytes to be encoded.80.* param iOff Offset of the first byte in in to be processed.81.* param iLen Number of bytes to be processed in in, starting at iOff.82.* param lineLen Line length for the output data. Should be a multiple of 4.83.* param lineSeparator The line separator to be used to separate the output lines.84.* return A String containing the Base64 encoded data, broken into lines.85.*/86.public static String encodeLines (byte in, int iOff, int iLen, int lineLen, String lineSeparator) 87.int blockLen = (lineLen*3) / 4;88.if (blockLen = 0) throw new IllegalArgumentException();89.int lines = (iLen+blockLen-1) / blockLen;90.int bufLen = (iLen+2)/3)*4 + lines*lineSeparator.length();91.StringBuilder buf = new StringBuilder(bufLen);92.int ip = 0;93.while (ip iLen) 94. int l = Math.min(iLen-ip, blockLen);95. buf.append (encode(in, iOff+ip, l);96. buf.append (lineSeparator);97. ip += l; 98.return buf.toString(); 99.100./*101.* Encodes a byte array into Base64 format.102.* No blanks or line breaks are inserted in the output.103.* param in An array containing the data bytes to be encoded.104.* return A character array containing the Base64 encoded data.105.*/106.public static char encode (byte in) 107.return encode(in, 0, in.length); 108.109./*110.* Encodes a byte array into Base64 format.111.* No blanks or line breaks are inserted in the output.112.* param in An array containing the data bytes to be encoded.113.* param iLen Number of bytes to process in in.114.* return A character array containing the Base64 encoded data.115.*/116.public static char encode (byte in, int iLen) 117.return encode(in, 0, iLen); 118.119./*120.* Encodes a byte array into Base64 format.121.* No blanks or line breaks are inserted in the output.122.* param in An array containing the data bytes to be encoded.123.* param iOff Offset of the first byte in in to be processed.124.* param iLen Number of bytes to process in in, starting at iOff.125.* return A character array containing the Base64 encoded data.126.*/127.public static char encode (byte in, int iOff, int iLen) 128.int oDataLen = (iLen*4+2)/3; / output length without oLen = (iLen+2)/3)*4; / output length including padding130.char out = new charoLen;131.int ip = iOff;132.int iEnd = iOff + iLen;133.int op = 0;134.while (ip iEnd) 135. int i0 = inip+ & 0xff;136. int i1 = ip iEnd ? inip+ & 0xff : 0;137. int i2 = ip 2;139. int o1 = (i0 & 3) 4);140. int o2 = (i1 & 0xf) 6);141. int o3 = i2 & 0x3F;142. outop+ = map1o0;143. outop+ = map1o1;144. outop = op oDataLen ? map1o2 : =; op+;145. outop = op oDataLen ? map1o3 : =; op+; 146.return out; 147.148./*149.* Decodes a string from Base64 format.150.* No blanks or line breaks are allowed within the Base64 encoded input data.151.* param s A Base64 String to be decoded.152.* return A String containing the decoded data.153.* throws IllegalArgumentException If the input is not valid Base64 encoded data.154.*/155.public static String decodeString (String s) 156.return new String(decode(s); 157.158./*159.* Decodes a byte array from Base64 format and ignores line separators, tabs and blanks.160.* CR, LF, Tab and Space characters are ignored in the input data.161.* This method is compatible with sun.misc.BASE64Decoder.decodeBuffer(String).162.* param s A Base64 String to be decoded.163.* return An array containing the decoded data bytes.164.* throws IllegalArgumentException If the input is not valid Base64 encoded data.165.*/166.public static byte decodeLines (String s) 167.char buf = new chars.length()+3;168.int p = 0;169.for (int ip = 0; ip s.length(); ip+) 170. char c = s.charAt(ip);171. if (c != & c != r & c != n & c != t)172. bufp+ = c; 173. while (p % 4) != 0)174. bufp+ = 0;175.176.return decode(buf, 0, p); 177.178./*179.* Decodes a byte array from Base64 format.180.* No blanks or line breaks are allowed within the Base64 encoded input data.181.* param s A Base64 String to be decoded.182.* return An array containing the decoded data bytes.183.* throws IllegalArgumentException If the input is not valid Base64 encoded data.184.*/185.public static byte decode (String s) 186.return decode(s.toCharArray(); 187.188./*189.* Decodes a byte array from Base64 format.190.* No blanks or line breaks are allowed within the Base64 encoded input data.191.* param in A character array containing the Base64 encoded data.192.* return An array containing the decoded data bytes.193.* throws IllegalArgumentException If the input is not valid Base64 encoded data.194.*/195.public static byte decode (char in) 196.return decode(in, 0, in.length); 197.198./*199.* Decodes a byte array from Base64 format.200.* No blanks