Android拍照，上传，预览综合

第一步

view source

print ?

1

try {

2	Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

3	startActivityForResult(intent, 0);

4

5	} catch (ActivityNotFoundException e) {

6	// Do nothing for now

7

}

[代码] 第二步

view source

print ?

01

@Override

02	protected void onActivityResult(int requestCode, int resultCode, Intent data) {

03

try {

04	if (requestCode != 0) {

05

return;

06

}

07	super.onActivityResult(requestCode, resultCode, data);

08	Bundle extras = data.getExtras();

09	Bitmap b = (Bitmap) extras.get("data");

10

//

11

12

//

13	ImageView a = (ImageView)findViewById(R.id.imageView1);

14	a.setImageBitmap(b);

15

//

16

/*

17	* 得到图片对图片处理...

18

*/

19	} catch (Exception e) {

20	// TODO: handle exception

21	System.out.println(e.getMessage());

22

}

23

}

最近需要做手机拍照([1]、调用系统相机【博客最后】；[2]、自己写照相机布局)，预览，上传功能。特地研究了下android的手机拍照，其实不难。

参考：

http://blog.youkuaiyun.com/cfwdl/article/details/5746708

http://mjbb.iteye.com/blog/1018006

http://blog.youkuaiyun.com/hellogv/article/details/5962494

1、上传文件功能没啥好说的，网上很多讲的，只要细心点，按照格式来写发送的数据，都是没有问题的。如果遇到问题，欢迎留言讨论、

2、预览也没啥讲的，就用Gallery和ImageSwitcher就行，我做的很简单(参考代码)。

附上流程图：

拍照功能： 【预览尺寸有知道的朋友留言告知。】

Java代码

1. importjava.io.BufferedOutputStream;
2. importjava.io.File;
3. importjava.io.FileOutputStream;
4. importjava.io.IOException;
6. importandroid.app.Activity;
7. importandroid.app.AlertDialog;
8. importandroid.content.DialogInterface;
9. importandroid.content.Intent;
10. importandroid.graphics.Bitmap;
11. importandroid.graphics.BitmapFactory;
12. importandroid.graphics.PixelFormat;
13. importandroid.hardware.Camera;
14. importandroid.hardware.Camera.AutoFocusCallback;
15. importandroid.hardware.Camera.PictureCallback;
16. importandroid.hardware.Camera.ShutterCallback;
17. importandroid.os.Bundle;
18. importandroid.os.Environment;
19. importandroid.util.Log;
20. importandroid.view.KeyEvent;
21. importandroid.view.SurfaceHolder;
22. importandroid.view.SurfaceView;
23. importandroid.view.View;
24. importandroid.view.View.OnClickListener;
25. importandroid.widget.Button;
27. importcom.peacemap.photo.po.Const;
28. /**
29. *拍照
30. *@authorAdministrator
31. */
32. publicclassTakePhotoActextendsActivityimplementsSurfaceHolder.Callback{
34. privatestaticStringimgPath=Environment.getExternalStorageDirectory().getPath()+"/"+Const.imageDir;
36. privateSurfaceViewsurfaceView;//相机画布
37. privateSurfaceHoldersurfaceHolder;
38. privateButtontakePicView,exitView;
40. privateCameramCamera;//照相机
42. @Override
43. publicvoidonCreate(BundlesavedInstanceState){
45. super.onCreate(savedInstanceState);
46. setContentView(R.layout.main);
47. //这里我在AndroidManifest.xml的activity中添加了android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
49. /**
50. *隐藏状态栏和标题栏
52. this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
53. requestWindowFeature(Window.FEATURE_NO_TITLE);
54. */
55. //setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);//横屏
56. /**
57. *获取Button并且设置事件监听
58. */
59. takePicView=(Button)this.findViewById(R.id.takepic);
60. takePicView.setOnClickListener(TakePicListener);
61. exitView=(Button)this.findViewById(R.id.exit);
62. exitView.setOnClickListener(newOnClickListener(){
63. @Override
64. publicvoidonClick(Viewv){
65. finish();
66. }
67. });
68. surfaceView=(SurfaceView)this.findViewById(R.id.surface_camera);
69. surfaceHolder=surfaceView.getHolder();
70. surfaceHolder.addCallback(this);
71. surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
73. checkSoftStage();//首先检测SD卡是否存在
74. }
76. /**
77. *检测手机是否存在SD卡,网络连接是否打开
78. */
79. privatevoidcheckSoftStage(){
80. if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){//判断是否存在SD卡
81. //StringrootPath=Environment.getExternalStorageDirectory().getPath();//获取SD卡的根目录
82. Filefile=newFile(imgPath);
83. if(!file.exists()){
84. file.mkdir();
85. }
86. }else{
87. newAlertDialog.Builder(this).setMessage("检测到手机没有存储卡！请插入手机存储卡再开启本应用。")
88. .setPositiveButton("确定",newDialogInterface.OnClickListener(){
89. @Override
90. publicvoidonClick(DialogInterfacedialog,intwhich){
91. finish();
92. }
93. }).show();
94. }
95. }
97. /**
98. *点击拍照按钮,启动拍照
99. */
100. privatefinalOnClickListenerTakePicListener=newOnClickListener(){
101. @Override
102. publicvoidonClick(Viewv){
103. mCamera.autoFocus(newAutoFoucus());//自动对焦
104. }
105. };
107. /**
108. *自动对焦后拍照
109. *@authoraokunsang
110. *@Date2011-12-5
111. */
112. privatefinalclassAutoFoucusimplementsAutoFocusCallback{
113. @Override
114. publicvoidonAutoFocus(booleansuccess,Cameracamera){
115. if(success&&mCamera!=null){
116. mCamera.takePicture(mShutterCallback,null,mPictureCallback);
117. }
118. }
119. }
120. /**
121. *重点对象、此处实例化了一个本界面的PictureCallback
122. *当用户拍完一张照片的时候触发，这时候对图片处理并保存操作。
123. *
124. */
125. privatefinalPictureCallbackmPictureCallback=newPictureCallback(){
126. @Override
127. publicvoidonPictureTaken(byte[]data,Cameracamera){
128. try{
129. StringfileName=System.currentTimeMillis()+".jpg";
130. Filefile=newFile(imgPath,fileName);
131. Bitmapbm=BitmapFactory.decodeByteArray(data,0,data.length);
132. BufferedOutputStreambos=newBufferedOutputStream(newFileOutputStream(file));
133. bm.compress(Bitmap.CompressFormat.JPEG,60,bos);
134. bos.flush();
135. bos.close();
137. Intentintent=newIntent(TakePhotoAct.this,PictureViewAct.class);
138. intent.putExtra("imagePath",file.getPath());
139. startActivity(intent);
140. }catch(Exceptione){
141. e.printStackTrace();
142. }
143. }
144. };
145. /**
146. *在相机快门关闭时候的回调接口，通过这个接口来通知用户快门关闭的事件，
147. *普通相机在快门关闭的时候都会发出响声，根据需要可以在该回调接口中定义各种动作，例如：使设备震动
148. */
149. privatefinalShutterCallbackmShutterCallback=newShutterCallback(){
150. publicvoidonShutter(){
151. Log.d("ShutterCallback","...onShutter...");
152. }
153. };
155. @Override
156. /**
157. *初始化相机参数，比如相机的参数:像素,大小,格式
158. */
159. publicvoidsurfaceChanged(SurfaceHolderholder,intformat,intwidth,
160. intheight){
161. Camera.Parametersparam=mCamera.getParameters();
162. /**
163. *设置拍照图片格式
164. */
165. param.setPictureFormat(PixelFormat.JPEG);
166. /**
167. *设置预览尺寸【这里需要注意：预览尺寸有些数字正确，有些会报错，不清楚为啥】
168. */
169. //param.setPreviewSize(320,240);
170. /**
171. *设置图片大小
172. */
173. param.setPictureSize(Const.width,Const.height);
174. mCamera.setParameters(param);
175. /**
176. *开始预览
177. */
178. mCamera.startPreview();
179. }
180. @Override
181. /**
182. *打开相机,设置预览
183. */
184. publicvoidsurfaceCreated(SurfaceHolderholder){
185. try{
186. mCamera=Camera.open();//打开摄像头
187. mCamera.setPreviewDisplay(holder);
188. }catch(IOExceptione){
189. mCamera.release();
190. mCamera=null;
191. }
192. }
194. @Override
195. /**
196. *预览界面被关闭时，或者停止相机拍摄;释放相机资源
197. */
198. publicvoidsurfaceDestroyed(SurfaceHolderholder){
199. mCamera.stopPreview();
200. if(mCamera!=null)mCamera.release();
201. mCamera=null;
202. }
204. @Override
205. publicbooleanonKeyDown(intkeyCode,KeyEventevent){
206. if(keyCode==KeyEvent.KEYCODE_CAMERA){//按下相机实体按键，启动本程序照相功能
207. mCamera.autoFocus(newAutoFoucus());//自动对焦
208. returntrue;
209. }else{
210. returnfalse;
211. }
212. }
213. }

import java.io.BufferedOutputStream; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import android.app.Activity; import android.app.AlertDialog; import android.content.DialogInterface; import android.content.Intent; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.PixelFormat; import android.hardware.Camera; import android.hardware.Camera.AutoFocusCallback; import android.hardware.Camera.PictureCallback; import android.hardware.Camera.ShutterCallback; import android.os.Bundle; import android.os.Environment; import android.util.Log; import android.view.KeyEvent; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import com.peacemap.photo.po.Const; /** * 拍照 * @author Administrator */ public class TakePhotoAct extends Activity implements SurfaceHolder.Callback{ private static String imgPath = Environment.getExternalStorageDirectory().getPath() + "/"+Const.imageDir; private SurfaceView surfaceView; //相机画布 private SurfaceHolder surfaceHolder; private Button takePicView,exitView; private Camera mCamera; //照相机 @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); //这里我在AndroidManifest.xml的activity中添加了android:theme="@android:style/Theme.NoTitleBar.Fullscreen" /** * 隐藏状态栏和标题栏 this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); requestWindowFeature(Window.FEATURE_NO_TITLE); */ //setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); //横屏 /** * 获取Button并且设置事件监听 */ takePicView = (Button)this.findViewById(R.id.takepic); takePicView.setOnClickListener(TakePicListener); exitView = (Button)this.findViewById(R.id.exit); exitView.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { finish(); } }); surfaceView = (SurfaceView)this.findViewById(R.id.surface_camera); surfaceHolder = surfaceView.getHolder(); surfaceHolder.addCallback(this); surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); checkSoftStage(); //首先检测SD卡是否存在 } /** * 检测手机是否存在SD卡,网络连接是否打开 */ private void checkSoftStage(){ if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){ //判断是否存在SD卡 // String rootPath = Environment.getExternalStorageDirectory().getPath(); //获取SD卡的根目录 File file = new File(imgPath); if(!file.exists()){ file.mkdir(); } }else{ new AlertDialog.Builder(this).setMessage("检测到手机没有存储卡！请插入手机存储卡再开启本应用。") .setPositiveButton("确定", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { finish(); } }).show(); } } /** * 点击拍照按钮,启动拍照 */ private final OnClickListener TakePicListener = new OnClickListener(){ @Override public void onClick(View v) { mCamera.autoFocus(new AutoFoucus()); //自动对焦 } }; /** * 自动对焦后拍照 * @author aokunsang * @Date 2011-12-5 */ private final class AutoFoucus implements AutoFocusCallback{ @Override public void onAutoFocus(boolean success, Camera camera) { if(success && mCamera!=null){ mCamera.takePicture(mShutterCallback, null, mPictureCallback); } } } /** * 重点对象、 此处实例化了一个本界面的PictureCallback * 当用户拍完一张照片的时候触发，这时候对图片处理并保存操作。 * */ private final PictureCallback mPictureCallback = new PictureCallback() { @Override public void onPictureTaken(byte[] data, Camera camera) { try { String fileName = System.currentTimeMillis()+".jpg"; File file = new File(imgPath,fileName); Bitmap bm = BitmapFactory.decodeByteArray(data, 0, data.length); BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(file)); bm.compress(Bitmap.CompressFormat.JPEG, 60, bos); bos.flush(); bos.close(); Intent intent = new Intent(TakePhotoAct.this,PictureViewAct.class); intent.putExtra("imagePath", file.getPath()); startActivity(intent); } catch (Exception e) { e.printStackTrace(); } } }; /** * 在相机快门关闭时候的回调接口，通过这个接口来通知用户快门关闭的事件， * 普通相机在快门关闭的时候都会发出响声，根据需要可以在该回调接口中定义各种动作， 例如：使设备震动 */ private final ShutterCallback mShutterCallback = new ShutterCallback() { public void onShutter() { Log.d("ShutterCallback", "...onShutter..."); } }; @Override /** * 初始化相机参数，比如相机的参数: 像素, 大小,格式 */ public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { Camera.Parameters param = mCamera.getParameters(); /** * 设置拍照图片格式 */ param.setPictureFormat(PixelFormat.JPEG); /** * 设置预览尺寸【这里需要注意：预览尺寸有些数字正确，有些会报错，不清楚为啥】 */ //param.setPreviewSize(320, 240); /** * 设置图片大小 */ param.setPictureSize(Const.width, Const.height); mCamera.setParameters(param); /** * 开始预览 */ mCamera.startPreview(); } @Override /** * 打开相机,设置预览 */ public void surfaceCreated(SurfaceHolder holder) { try { mCamera = Camera.open(); //打开摄像头 mCamera.setPreviewDisplay(holder); } catch (IOException e) { mCamera.release(); mCamera = null; } } @Override /** * 预览界面被关闭时，或者停止相机拍摄;释放相机资源 */ public void surfaceDestroyed(SurfaceHolder holder) { mCamera.stopPreview(); if(mCamera!=null) mCamera.release(); mCamera = null; } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if(keyCode == KeyEvent.KEYCODE_CAMERA){ //按下相机实体按键，启动本程序照相功能 mCamera.autoFocus(new AutoFoucus()); //自动对焦 return true; }else{ return false; } } }

xml：

Xml代码

1. <?xmlversion="1.0"encoding="utf-8"?>
2. <LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"
3. android:orientation="vertical"
4. android:layout_width="fill_parent"
5. android:layout_height="fill_parent"
6. >
7. <SurfaceView
8. android:id="@+id/surface_camera"
9. android:layout_width="fill_parent"
10. android:layout_height="fill_parent"
11. android:layout_weight="1"
12. />
13. <LinearLayout
14. android:orientation="horizontal"
15. android:layout_width="fill_parent"
16. android:layout_height="wrap_content">
18. <Button
19. android:text="拍照"
20. android:layout_width="wrap_content"
21. android:layout_height="wrap_content"
22. android:id="@+id/takepic"
23. />
24. <Button
25. android:text="退出"
26. android:layout_width="wrap_content"
27. android:layout_height="wrap_content"
28. android:id="@+id/exit"
29. />
30. </LinearLayout>
31. </LinearLayout>

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <SurfaceView android:id="@+id/surface_camera" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_weight="1" /> <LinearLayout android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="wrap_content"> <Button android:text="拍照" android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/takepic" /> <Button android:text="退出" android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/exit" /> </LinearLayout> </LinearLayout>

预览功能：

Java代码

1. importjava.io.File;
2. importjava.util.ArrayList;
3. importjava.util.List;
5. importandroid.app.Activity;
6. importandroid.app.AlertDialog;
7. importandroid.content.ComponentName;
8. importandroid.content.DialogInterface;
9. importandroid.content.Intent;
10. importandroid.graphics.Bitmap;
11. importandroid.graphics.BitmapFactory;
12. importandroid.graphics.drawable.BitmapDrawable;
13. importandroid.os.Bundle;
14. importandroid.os.Environment;
15. importandroid.util.Log;
16. importandroid.view.Menu;
17. importandroid.view.MenuItem;
18. importandroid.view.MotionEvent;
19. importandroid.view.View;
20. importandroid.view.View.OnTouchListener;
21. importandroid.view.animation.AnimationUtils;
22. importandroid.widget.AdapterView;
23. importandroid.widget.Gallery;
24. importandroid.widget.ImageSwitcher;
25. importandroid.widget.ImageView;
26. importandroid.widget.LinearLayout.LayoutParams;
27. importandroid.widget.ViewSwitcher.ViewFactory;
29. importcom.peacemap.photo.adapter.ImageAdapter;
30. importcom.peacemap.photo.po.Const;
32. /**
33. *图片浏览
34. *@authoraokunsang
35. *@Date2011-12-6
36. */
37. publicclassPhotoScanActextendsActivityimplementsViewFactory{
40. privatestaticStringimgPath=Environment.getExternalStorageDirectory().getPath()+"/"+Const.imageDir;
42. privateImageSwitcherimageSwitcher;
43. privateGallerygallery;
44. privateList<String>photoList;
45. privateintdownX,upX;
46. privateStringnewFilePath;
48. @Override
49. protectedvoidonCreate(BundlesavedInstanceState){
50. super.onCreate(savedInstanceState);
51. setContentView(R.layout.photoscan);
53. photoList=readFileList();
55. imageSwitcher=(ImageSwitcher)findViewById(R.id.switcher);
56. imageSwitcher.setFactory(this);
57. /*
58. *淡入淡出效果
59. */
60. imageSwitcher.setInAnimation(AnimationUtils.loadAnimation(this,
61. android.R.anim.fade_in));
62. imageSwitcher.setOutAnimation(AnimationUtils.loadAnimation(this,
63. android.R.anim.fade_out));
64. imageSwitcher.setOnTouchListener(touchListener);
65. gallery=(Gallery)findViewById(R.id.gallery);
66. gallery.setAdapter(newImageAdapter(this,photoList));
67. gallery.setOnItemSelectedListener(newAdapterView.OnItemSelectedListener(){
68. @Override
69. publicvoidonItemSelected(AdapterView<?>arg0,Viewarg1,
70. intposition,longwhen){
71. newFilePath=photoList.get(position);
72. Bitmapbm=BitmapFactory.decodeFile(photoList.get(position));
73. BitmapDrawablebd=newBitmapDrawable(bm);
74. imageSwitcher.setImageDrawable(bd);
75. }
76. @Override
77. publicvoidonNothingSelected(AdapterView<?>arg0){}
78. });
79. }
81. /**
82. *注册一个触摸事件
83. */
84. privateOnTouchListenertouchListener=newView.OnTouchListener(){
85. @Override
86. publicbooleanonTouch(Viewv,MotionEventevent){
87. if(event.getAction()==MotionEvent.ACTION_DOWN)
88. {
89. downX=(int)event.getX();//取得按下时的坐标
90. returntrue;
91. }
92. elseif(event.getAction()==MotionEvent.ACTION_UP)
93. {
94. upX=(int)event.getX();//取得松开时的坐标
95. intindex=0;
96. if(upX-downX>100)//从左拖到右，即看前一张
97. {
98. //如果是第一，则去到尾部
99. if(gallery.getSelectedItemPosition()==0)
100. index=gallery.getCount()-1;
101. else
102. index=gallery.getSelectedItemPosition()-1;
103. }
104. elseif(downX-upX>100)//从右拖到左，即看后一张
105. {
106. //如果是最后，则去到第一
107. if(gallery.getSelectedItemPosition()==(gallery.getCount()-1))
108. index=0;
109. else
110. index=gallery.getSelectedItemPosition()+1;
111. }
112. //改变gallery图片所选，自动触发ImageSwitcher的setOnItemSelectedListener
113. gallery.setSelection(index,true);
114. returntrue;
115. }
116. returnfalse;
117. }
118. };
119. /**
120. *获取SD卡中的所有图片路径
121. *@return
122. */
123. privateList<String>readFileList(){
124. List<String>fileList=newArrayList<String>();
125. FilefileDir=newFile(imgPath);
126. File[]files=fileDir.listFiles();
127. if(files!=null){
128. for(Filefile:files){
129. StringfileName=file.getName();
130. if(fileName.lastIndexOf(".")>0
131. &&fileName.substring(fileName.lastIndexOf(".")+1,
132. fileName.length()).equals("jpg")){
133. fileList.add(file.getPath());
134. }
135. }
136. }
137. returnfileList;
138. }
140. @Override
141. publicViewmakeView(){
142. ImageViewimageView=newImageView(this);
143. imageView.setScaleType(ImageView.ScaleType.CENTER);
144. imageView.setLayoutParams(newImageSwitcher.LayoutParams(//自适应图片大小
145. LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT));
146. returnimageView;
147. }
149. //声明2个menu键按钮
150. publicfinalstaticintITEM_1_ID=Menu.FIRST;
151. publicfinalstaticintITEM_2_ID=Menu.FIRST+1;
153. @Override
154. publicbooleanonCreateOptionsMenu(Menumenu){
155. super.onCreateOptionsMenu(menu);
156. menu.add(0,ITEM_1_ID,0,"我要上传");
157. menu.add(0,ITEM_2_ID,1,"我要拍照");
158. returntrue;
159. }
161. @Override
162. publicbooleanonOptionsItemSelected(MenuItemitem){
163. super.onOptionsItemSelected(item);
164. switch(item.getItemId()){
165. case1:{//调出系统设置界面
166. Intentintent=newIntent(PhotoScanAct.this,PictureViewAct.class);
167. intent.putExtra("imagePath",newFilePath);
168. startActivity(intent);
169. break;
170. }
171. case2:{//拍照
172. startActivity(newIntent(this,TakePhotoAct.class));
173. break;
174. }
175. }
176. returntrue;
177. }
178. }

import java.io.File; import java.util.ArrayList; import java.util.List; import android.app.Activity; import android.app.AlertDialog; import android.content.ComponentName; import android.content.DialogInterface; import android.content.Intent; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.drawable.BitmapDrawable; import android.os.Bundle; import android.os.Environment; import android.util.Log; import android.view.Menu; import android.view.MenuItem; import android.view.MotionEvent; import android.view.View; import android.view.View.OnTouchListener; import android.view.animation.AnimationUtils; import android.widget.AdapterView; import android.widget.Gallery; import android.widget.ImageSwitcher; import android.widget.ImageView; import android.widget.LinearLayout.LayoutParams; import android.widget.ViewSwitcher.ViewFactory; import com.peacemap.photo.adapter.ImageAdapter; import com.peacemap.photo.po.Const; /** * 图片浏览 * @author aokunsang * @Date 2011-12-6 */ public class PhotoScanAct extends Activity implements ViewFactory{ private static String imgPath = Environment.getExternalStorageDirectory().getPath() + "/"+Const.imageDir; private ImageSwitcher imageSwitcher; private Gallery gallery; private List<String> photoList; private int downX,upX; private String newFilePath; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.photoscan); photoList = readFileList(); imageSwitcher = (ImageSwitcher)findViewById(R.id.switcher); imageSwitcher.setFactory(this); /* * 淡入淡出效果 */ imageSwitcher.setInAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_in)); imageSwitcher.setOutAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_out)); imageSwitcher.setOnTouchListener(touchListener); gallery = (Gallery)findViewById(R.id.gallery); gallery.setAdapter(new ImageAdapter(this, photoList)); gallery.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> arg0, View arg1, int position, long when) { newFilePath = photoList.get(position); Bitmap bm = BitmapFactory.decodeFile(photoList.get(position)); BitmapDrawable bd = new BitmapDrawable(bm); imageSwitcher.setImageDrawable(bd); } @Override public void onNothingSelected(AdapterView<?> arg0) {} }); } /** * 注册一个触摸事件 */ private OnTouchListener touchListener = new View.OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { if(event.getAction()==MotionEvent.ACTION_DOWN) { downX=(int) event.getX();//取得按下时的坐标 return true; } else if(event.getAction()==MotionEvent.ACTION_UP) { upX=(int) event.getX();//取得松开时的坐标 int index=0; if(upX-downX>100)//从左拖到右，即看前一张 { //如果是第一，则去到尾部 if(gallery.getSelectedItemPosition()==0) index=gallery.getCount()-1; else index=gallery.getSelectedItemPosition()-1; } else if(downX-upX>100)//从右拖到左，即看后一张 { //如果是最后，则去到第一 if(gallery.getSelectedItemPosition()==(gallery.getCount()-1)) index=0; else index=gallery.getSelectedItemPosition()+1; } //改变gallery图片所选，自动触发ImageSwitcher的setOnItemSelectedListener gallery.setSelection(index, true); return true; } return false; } }; /** * 获取SD卡中的所有图片路径 * @return */ private List<String> readFileList(){ List<String> fileList = new ArrayList<String>(); File fileDir = new File(imgPath); File[] files = fileDir.listFiles(); if(files!=null){ for(File file:files){ String fileName = file.getName(); if (fileName.lastIndexOf(".") > 0 && fileName.substring(fileName.lastIndexOf(".") + 1, fileName.length()).equals("jpg")){ fileList.add(file.getPath()); } } } return fileList; } @Override public View makeView() { ImageView imageView = new ImageView(this); imageView.setScaleType(ImageView.ScaleType.CENTER); imageView.setLayoutParams(new ImageSwitcher.LayoutParams(//自适应图片大小 LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT)); return imageView; } //声明2个menu键按钮 public final static int ITEM_1_ID = Menu.FIRST; public final static int ITEM_2_ID = Menu.FIRST+1; @Override public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); menu.add(0, ITEM_1_ID, 0, "我要上传"); menu.add(0, ITEM_2_ID, 1, "我要拍照"); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { super.onOptionsItemSelected(item); switch(item.getItemId()){ case 1:{ //调出系统设置界面 Intent intent = new Intent(PhotoScanAct.this,PictureViewAct.class); intent.putExtra("imagePath",newFilePath); startActivity(intent); break; } case 2:{ //拍照 startActivity(new Intent(this,TakePhotoAct.class)); break; } } return true; } }

ImageAdapter适配器：

Java代码

1. importjava.util.List;
3. importandroid.content.Context;
4. importandroid.graphics.Bitmap;
5. importandroid.graphics.BitmapFactory;
6. importandroid.view.View;
7. importandroid.view.ViewGroup;
8. importandroid.widget.BaseAdapter;
9. importandroid.widget.Gallery;
10. importandroid.widget.ImageView;
12. /**
13. *图片适配器
14. *@authoraokunsang
15. *@Date2011-12-6
16. */
17. publicclassImageAdapterextendsBaseAdapter{
19. privateList<String>picList;
20. privateContextmContext;
21. publicImageAdapter(ContextmContext,List<String>picList){
22. this.mContext=mContext;
23. this.picList=picList;
24. }
26. @Override
27. publicintgetCount(){
28. returnpicList.size();
29. }
31. /*(non-Javadoc)
32. *@seeandroid.widget.Adapter#getItem(int)
33. */
34. @Override
35. publicObjectgetItem(intposition){
36. //TODOAuto-generatedmethodstub
37. returnpicList.get(position);
38. }
40. /*(non-Javadoc)
41. *@seeandroid.widget.Adapter#getItemId(int)
42. */
43. @Override
44. publiclonggetItemId(intposition){
45. //TODOAuto-generatedmethodstub
46. returnposition;
47. }
49. @Override
50. publicViewgetView(intposition,ViewconvertView,ViewGroupparent){
51. ImageViewimage=newImageView(mContext);
52. Bitmapbm=BitmapFactory.decodeFile(picList.get(position));
53. image.setImageBitmap(bm);
54. image.setScaleType(ImageView.ScaleType.CENTER_CROP);
55. image.setLayoutParams(newGallery.LayoutParams(100,100));
56. returnimage;
57. }
58. }

import java.util.List; import android.content.Context; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.Gallery; import android.widget.ImageView; /** * 图片适配器 * @author aokunsang * @Date 2011-12-6 */ public class ImageAdapter extends BaseAdapter { private List<String> picList; private Context mContext; public ImageAdapter(Context mContext,List<String> picList){ this.mContext = mContext; this.picList = picList; } @Override public int getCount() { return picList.size(); } /* (non-Javadoc) * @see android.widget.Adapter#getItem(int) */ @Override public Object getItem(int position) { // TODO Auto-generated method stub return picList.get(position); } /* (non-Javadoc) * @see android.widget.Adapter#getItemId(int) */ @Override public long getItemId(int position) { // TODO Auto-generated method stub return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { ImageView image = new ImageView(mContext); Bitmap bm = BitmapFactory.decodeFile(picList.get(position)); image.setImageBitmap(bm); image.setScaleType(ImageView.ScaleType.CENTER_CROP); image.setLayoutParams(new Gallery.LayoutParams(100, 100)); return image; } }

xml:

Xml代码

1. <?xmlversion="1.0"encoding="utf-8"?>
2. <RelativeLayout
3. xmlns:android="http://schemas.android.com/apk/res/android"
4. android:layout_width="match_parent"
5. android:layout_height="match_parent">
7. <ImageSwitcher
8. android:id="@+id/switcher"
9. android:layout_width="match_parent"
10. android:layout_height="match_parent"
11. ></ImageSwitcher>
13. <Gallery
14. android:id="@+id/gallery"
15. android:layout_width="match_parent"
16. android:background="#55000000"
17. android:layout_height="100dip"
18. android:layout_alignParentBottom="true"
19. android:layout_alignParentLeft="true"
20. android:gravity="center_vertical"
21. android:spacing="8dip"
22. />
23. </RelativeLayout>

<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent"> <ImageSwitcher android:id="@+id/switcher" android:layout_width="match_parent" android:layout_height="match_parent" ></ImageSwitcher> <Gallery android:id="@+id/gallery" android:layout_width="match_parent" android:background="#55000000" android:layout_height="100dip" android:layout_alignParentBottom="true" android:layout_alignParentLeft="true" android:gravity="center_vertical" android:spacing="8dip" /> </RelativeLayout>

上传工具类：

Java代码

1. importjava.io.BufferedReader;
2. importjava.io.DataOutputStream;
3. importjava.io.FileInputStream;
4. importjava.io.InputStream;
5. importjava.io.InputStreamReader;
6. importjava.net.HttpURLConnection;
7. importjava.net.URL;
8. importjava.util.Map;
9. importjava.util.Map.Entry;
11. importandroid.util.Log;
13. importcom.peacemap.photo.po.FileInfo;
15. /**
16. *POST上传文件
17. *@authoraokunsang
18. *@Date2011-12-6
19. */
20. publicclassPostFile{
22. privatestaticPostFilepostFile=newPostFile();
24. privatefinalstaticStringLINEND="\r\n";
25. privatefinalstaticStringBOUNDARY="---------------------------7da2137580612";//数据分隔线
26. privatefinalstaticStringPREFIX="--";
27. privatefinalstaticStringMUTIPART_FORMDATA="multipart/form-data";
28. privatefinalstaticStringCHARSET="utf-8";
29. privatefinalstaticStringCONTENTTYPE="application/octet-stream";
31. privatePostFile(){}
32. publicstaticPostFilegetInstance(){
33. returnpostFile;
34. }
36. /**
37. *HTTP上传文件
38. *@paramactionUrl请求服务器的路径
39. *@paramparams传递的表单内容
40. *@paramfiles多个文件信息
41. *@return
42. */
43. publicStringpost(StringactionUrl,Map<String,String>params,FileInfo[]files){
44. try{
45. URLurl=newURL(actionUrl);
46. HttpURLConnectionurlConn=(HttpURLConnection)url.openConnection();
47. urlConn.setDoOutput(true);//允许输出
48. urlConn.setDoInput(true);//允许输入
49. urlConn.setUseCaches(false);
50. urlConn.setRequestMethod("POST");
51. urlConn.setRequestProperty("connection","Keep-Alive");
52. urlConn.setRequestProperty("Charset",CHARSET);
53. urlConn.setRequestProperty("Content-Type",MUTIPART_FORMDATA+";boundary="+BOUNDARY);
55. DataOutputStreamdos=newDataOutputStream(urlConn.getOutputStream());
56. //构建表单数据
57. StringentryText=bulidFormText(params);
58. Log.i("-------描述信息---------------",entryText);
59. dos.write(entryText.getBytes());
61. StringBuffersb=newStringBuffer("");
63. for(FileInfofile:files){
64. sb.append(PREFIX).append(BOUNDARY).append(LINEND);
65. sb.append("Content-Disposition:form-data;name=\""+file.getFileTextName()+"\";filename=\""+file.getFile().getAbsolutePath()+"\""+LINEND);
66. sb.append("Content-Type:"+CONTENTTYPE+";charset="+CHARSET+LINEND);
67. sb.append(LINEND);
68. dos.write(sb.toString().getBytes());
70. InputStreamis=newFileInputStream(file.getFile());
71. byte[]buffer=newbyte[1024];
72. intlen=0;
73. while((len=is.read(buffer))!=-1){
74. dos.write(buffer,0,len);
75. }
76. is.close();
77. dos.write(LINEND.getBytes());
78. }
79. //请求的结束标志
80. byte[]end_data=(PREFIX+BOUNDARY+PREFIX+LINEND).getBytes();
81. dos.write(end_data);
82. dos.flush();
83. //-----------------------------------发送请求数据结束----------------------------
85. //----------------------------------接收返回信息------------------------
87. intcode=urlConn.getResponseCode();
88. if(code!=200){
89. urlConn.disconnect();
90. return"";
91. }else{
92. BufferedReaderbr=newBufferedReader(newInputStreamReader(urlConn.getInputStream()));
93. Stringresult="";
94. Stringline=null;
95. while((line=br.readLine())!=null){
96. result+=line;
97. }
98. br.close();
99. urlConn.disconnect();
100. returnresult;
101. }
102. }catch(Exceptione){
103. Log.e("--------上传图片错误--------",e.getMessage());
104. returnnull;
105. }
106. }
108. /**
109. *HTTP上传单个文件
110. *@paramactionUrl请求服务器的路径
111. *@paramparams传递的表单内容
112. *@paramfiles单个文件信息
113. *@return
114. */
115. publicStringpost(StringactionUrl,Map<String,String>params,FileInfofileInfo){
116. returnpost(actionUrl,params,newFileInfo[]{fileInfo});
117. }
119. /**
120. *封装表单文本数据
121. *@paramparamText
122. *@return
123. */
124. privateStringbulidFormText(Map<String,String>paramText){
125. if(paramText==null||paramText.isEmpty())return"";
126. StringBuffersb=newStringBuffer("");
127. for(Entry<String,String>entry:paramText.entrySet()){
128. sb.append(PREFIX).append(BOUNDARY).append(LINEND);
129. sb.append("Content-Disposition:form-data;name=\""
130. +entry.getKey()+"\""+LINEND);
131. //sb.append("Content-Type:text/plain;charset="+CHARSET+LINEND);
132. sb.append(LINEND);
133. sb.append(entry.getValue());
134. sb.append(LINEND);
135. }
136. returnsb.toString();
137. }
138. /**
139. *封装文件文本数据
140. *@paramfiles
141. *@return
142. */
143. privateStringbuildFromFile(FileInfo[]files){
144. StringBuffersb=newStringBuffer();
145. for(FileInfofile:files){
146. sb.append(PREFIX).append(BOUNDARY).append(LINEND);
147. sb.append("Content-Disposition:form-data;name=\""+file.getFileTextName()+"\";filename=\""+file.getFile().getAbsolutePath()+"\""+LINEND);
148. sb.append("Content-Type:"+CONTENTTYPE+";charset="+CHARSET+LINEND);
149. sb.append(LINEND);
150. }
151. returnsb.toString();
152. }
153. }

import java.io.BufferedReader; import java.io.DataOutputStream; import java.io.FileInputStream; import java.io.InputStream; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.URL; import java.util.Map; import java.util.Map.Entry; import android.util.Log; import com.peacemap.photo.po.FileInfo; /** * POST上传文件 * @author aokunsang * @Date 2011-12-6 */ public class PostFile { private static PostFile postFile = new PostFile(); private final static String LINEND = "\r\n"; private final static String BOUNDARY = "---------------------------7da2137580612"; //数据分隔线 private final static String PREFIX = "--"; private final static String MUTIPART_FORMDATA = "multipart/form-data"; private final static String CHARSET = "utf-8"; private final static String CONTENTTYPE = "application/octet-stream"; private PostFile(){} public static PostFile getInstance(){ return postFile; } /** * HTTP上传文件 * @param actionUrl 请求服务器的路径 * @param params 传递的表单内容 * @param files 多个文件信息 * @return */ public String post(String actionUrl,Map<String,String> params,FileInfo[] files){ try { URL url = new URL(actionUrl); HttpURLConnection urlConn = (HttpURLConnection)url.openConnection(); urlConn.setDoOutput(true); //允许输出 urlConn.setDoInput(true); //允许输入 urlConn.setUseCaches(false); urlConn.setRequestMethod("POST"); urlConn.setRequestProperty("connection", "Keep-Alive"); urlConn.setRequestProperty("Charset", CHARSET); urlConn.setRequestProperty("Content-Type", MUTIPART_FORMDATA+";boundary="+BOUNDARY); DataOutputStream dos = new DataOutputStream(urlConn.getOutputStream()); //构建表单数据 String entryText = bulidFormText(params); Log.i("-------描述信息---------------", entryText); dos.write(entryText.getBytes()); StringBuffer sb = new StringBuffer(""); for(FileInfo file : files){ sb.append(PREFIX).append(BOUNDARY).append(LINEND); sb.append("Content-Disposition: form-data; name=\""+file.getFileTextName()+"\"; filename=\""+file.getFile().getAbsolutePath()+"\""+LINEND); sb.append("Content-Type:"+CONTENTTYPE+";charset="+CHARSET+LINEND); sb.append(LINEND); dos.write(sb.toString().getBytes()); InputStream is = new FileInputStream(file.getFile()); byte[] buffer = new byte[1024]; int len = 0; while ((len = is.read(buffer)) != -1) { dos.write(buffer, 0, len); } is.close(); dos.write(LINEND.getBytes()); } //请求的结束标志 byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINEND).getBytes(); dos.write(end_data); dos.flush(); //----------------------------------- 发送请求数据结束 ---------------------------- //---------------------------------- 接收返回信息 ------------------------ int code = urlConn.getResponseCode(); if(code!=200){ urlConn.disconnect(); return ""; }else{ BufferedReader br = new BufferedReader(new InputStreamReader(urlConn.getInputStream())); String result = ""; String line = null; while((line = br.readLine())!=null){ result += line; } br.close(); urlConn.disconnect(); return result; } } catch (Exception e) { Log.e("--------上传图片错误--------", e.getMessage()); return null; } } /** * HTTP上传单个文件 * @param actionUrl 请求服务器的路径 * @param params 传递的表单内容 * @param files 单个文件信息 * @return */ public String post(String actionUrl,Map<String,String> params,FileInfo fileInfo){ return post(actionUrl, params, new FileInfo[]{fileInfo}); } /** * 封装表单文本数据 * @param paramText * @return */ private String bulidFormText(Map<String,String> paramText){ if(paramText==null || paramText.isEmpty()) return ""; StringBuffer sb = new StringBuffer(""); for(Entry<String,String> entry : paramText.entrySet()){ sb.append(PREFIX).append(BOUNDARY).append(LINEND); sb.append("Content-Disposition:form-data;name=\"" + entry.getKey() + "\"" + LINEND); // sb.append("Content-Type:text/plain;charset=" + CHARSET + LINEND); sb.append(LINEND); sb.append(entry.getValue()); sb.append(LINEND); } return sb.toString(); } /** * 封装文件文本数据 * @param files * @return */ private String buildFromFile(FileInfo[] files){ StringBuffer sb = new StringBuffer(); for(FileInfo file : files){ sb.append(PREFIX).append(BOUNDARY).append(LINEND); sb.append("Content-Disposition: form-data; name=\""+file.getFileTextName()+"\"; filename=\""+file.getFile().getAbsolutePath()+"\""+LINEND); sb.append("Content-Type:"+CONTENTTYPE+";charset="+CHARSET+LINEND); sb.append(LINEND); } return sb.toString(); } }

-------------------------------------我是个华丽的分割线，哇哈哈-----------------------------------------------

做完这个拍照后，感觉功能太简单，比如：设置图片大小，白天夜晚照相等等一些系统照相机带的功能都没有，因此用在项目中感觉不炫。 然后就用了简单点的，直接调用系统照相机了。本来想着简单呢，后来也遇到点问题。

(1)根据Camera Activity返回的时候，会带一个名为data的 Bitmap对象，照片的缩略图（这个地方可以做各种修改，我没用到不说了），上代码：

Java代码

1. @Override
2. publicvoidonCreate(BundlesavedInstanceState){
3. super.onCreate(savedInstanceState);
4. checkSoftStage();
6. try{
7. Intentintent=newIntent(MediaStore.ACTION_IMAGE_CAPTURE);
8. startActivityForResult(intent,TAKE_PICTURE);
9. }catch(Exceptione){
10. e.printStackTrace();
11. }
12. }
13. /**
14. *检测手机是否存在SD卡,网络连接是否打开
15. */
16. privatevoidcheckSoftStage(){
17. if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){//判断是否存在SD卡
18. Filefile=newFile(imgPath);
19. if(!file.exists()){
20. file.mkdir();
21. }
22. }else{
23. newAlertDialog.Builder(this).setMessage("检测到手机没有存储卡！请插入手机存储卡再开启本应用。")
24. .setPositiveButton("确定",newDialogInterface.OnClickListener(){
25. @Override
26. publicvoidonClick(DialogInterfacedialog,intwhich){
27. finish();
28. }
29. }).show();
30. }
31. }
32. protectedvoidonActivityResult(intrequestCode,intresultCode,Intentdata){
33. if(resultCode==TAKE_PICTURE){
34. //拍照Activity保存图像数据的key是data，返回的数据类型是Bitmap对象
35. BitmapcameraBitmap=(Bitmap)data.getExtras().get("/sdcard/rtest.jpg");
36. //在ImageView组件中显示拍摄的照片
37. image.setImageBitmap(cameraBitmap);
39. //做自己的业务操作。。。。
40. }
41. super.onActivityResult(requestCode,resultCode,data);
42. }

@Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); checkSoftStage(); try { Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); startActivityForResult(intent, TAKE_PICTURE); } catch (Exception e) { e.printStackTrace(); } } /** * 检测手机是否存在SD卡,网络连接是否打开 */ private void checkSoftStage(){ if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){ //判断是否存在SD卡 File file = new File(imgPath); if(!file.exists()){ file.mkdir(); } }else{ new AlertDialog.Builder(this).setMessage("检测到手机没有存储卡！请插入手机存储卡再开启本应用。") .setPositiveButton("确定", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { finish(); } }).show(); } } protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (resultCode == TAKE_PICTURE) { // 拍照Activity保存图像数据的key是data，返回的数据类型是Bitmap对象 Bitmap cameraBitmap = (Bitmap) data.getExtras().get("/sdcard/rtest.jpg"); // 在ImageView组件中显示拍摄的照片 image.setImageBitmap(cameraBitmap); // 做自己的业务操作。。。。 } super.onActivityResult(requestCode, resultCode, data); }

(2)以上代码在我的小米手机上测试时，出现问题了。 返回的name为data的Bitmap对象是个Null,我发现小米照完相片之后，他会先跳到一个预览的界面(系统自带的页面)，所以得不到Bitmap对象了。

因此我就先保存照片以及其路径，然后在onActivityResult中获取图片，做业务操作，代码如下：

Java代码

1. publicvoidonCreate(BundlesavedInstanceState){
2. super.onCreate(savedInstanceState);
3. checkSoftStage();
5. try{
6. Intentintent=newIntent(MediaStore.ACTION_IMAGE_CAPTURE);
7. startActivityForResult(intent,TAKE_PICTURE);
8. }catch(Exceptione){
9. e.printStackTrace();
10. }
12. try{
13. Intentintent=newIntent(MediaStore.ACTION_IMAGE_CAPTURE);
14. StringfileName=System.currentTimeMillis()+".jpg";
15. newImgPath=imgPath+"/"+fileName;
16. Uriuri=Uri.fromFile(newFile(imgPath,fileName));
17. intent.putExtra(MediaStore.EXTRA_OUTPUT,uri);
18. startActivityForResult(intent,TAKE_PICTURE);
19. }catch(Exceptione){
20. e.printStackTrace();
21. }
22. }
23. @Override
24. protectedvoidonActivityResult(intrequestCode,
25. intresultCode,Intentdata){
26. Log.i("--------图片路径---------","------"+newImgPath+"---------");
27. //.....做一些业务操作
28. }catch(Exceptione){
29. e.printStackTrace();
30. }
31. super.onActivityResult(requestCode,resultCode,data);
32. }