效果：
注意：1：网络权限<uses-permission android:name="android.permission.INTERNET"></uses-permission>2：我封装了一个OKHttp，需要在build.gradle 中加入compile 'com.squareup.okhttp3:logging-interceptor:3.4.2' 在同步一在3：用SharedPreferences 保存和获取图片了，将图片和字符串进行了转换4: 可以调用相机和相册获取图片，并进行剪切//-----------------我的布局文件-----------------------------<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_main" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:gravity="center" tools:context="tckpicture.bwie.com.tackpicture2.MainActivity"> <ImageView android:layout_width="200dp" android:layout_height="200dp" android:scaleType="fitXY" android:src="@mipmap/ic_launcher" android:id="@+id/iv_img"/> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="相机" android:id="@+id/bt_camera"/> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="相册" android:id="@+id/bt_xiangce"/></LinearLayout>//-------------我的MainActivity -------------------------package tckpicture.bwie.com.tackpicture2;import android.content.Context;import android.content.Intent;import android.content.SharedPreferences;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.support.v7.app.AppCompatActivity;import android.util.Base64;import android.util.Log;import android.view.View;import android.widget.Button;import android.widget.ImageView;import android.widget.Toast;import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.File;import java.io.IOException;import java.util.HashMap;import java.util.Map;import okhttp3.Request;public class MainActivity extends AppCompatActivity implements View.OnClickListener { private ImageView iv_img; private Button bt_camera; private Button bt_xiangce; private static final int PHOTO_REQUEST_CAREMA = 1;// 拍照private static final int PHOTO_REQUEST_GALLERY = 2;// 从相册中选择private static final int PHOTO_REQUEST_CUT = 3;// 结果 /* 头像名称 */private static final String PHOTO_FILE_NAME = "temp_photo.jpg"; private File tempFile; @Overrideprotected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initView(); } private void initView() { iv_img = (ImageView) findViewById(R.id.iv_img); bt_camera = (Button) findViewById(R.id.bt_camera); bt_xiangce = (Button) findViewById(R.id.bt_xiangce);//从SharedPreferences获取图片getBitmapFromSharedPreferences(); bt_camera.setOnClickListener(this); bt_xiangce.setOnClickListener(this); } @Overridepublic void onClick(View v) { switch (v.getId()) { case R.id.bt_camera: // 激活相机Intent intent = new Intent("android.media.action.IMAGE_CAPTURE"); // 判断存储卡是否可以用，可用进行存储if (hasSdcard()) { tempFile = new File(Environment.getExternalStorageDirectory(), PHOTO_FILE_NAME); // 从文件中创建uriUri uri = Uri.fromFile(tempFile); intent.putExtra(MediaStore.EXTRA_OUTPUT, uri); } // 开启一个带有返回值的Activity，请求码为PHOTO_REQUEST_CAREMAstartActivityForResult(intent, PHOTO_REQUEST_CAREMA); break; case R.id.bt_xiangce: // 激活系统图库，选择一张图片Intent intent1 = new Intent(Intent.ACTION_PICK); intent1.setType("image/*"); // 开启一个带有返回值的Activity，请求码为PHOTO_REQUEST_GALLERYstartActivityForResult(intent1, PHOTO_REQUEST_GALLERY); break; } } /** 判断sdcard是否被挂载*/private boolean hasSdcard() { //判断ＳＤ卡手否是安装好的 media_mountedif (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) { return true; } else { return false; } } /* * 剪切图片 */private void crop(Uri uri) { // 裁剪图片意图Intent intent = new Intent("com.android.camera.action.CROP"); intent.setDataAndType(uri, "image/*"); intent.putExtra("crop", "true"); // 裁剪框的比例，1：1intent.putExtra("aspectX", 1); intent.putExtra("aspectY", 1); // 裁剪后输出图片的尺寸大小intent.putExtra("outputX", 250); intent.putExtra("outputY", 250); intent.putExtra("outputFormat", "JPEG");// 图片格式intent.putExtra("noFaceDetection", true);// 取消人脸识别intent.putExtra("return-data", true); // 开启一个带有返回值的Activity，请求码为PHOTO_REQUEST_CUTstartActivityForResult(intent, PHOTO_REQUEST_CUT); } /** * * @param requestCode* @param resultCode* @param data*/@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == PHOTO_REQUEST_GALLERY) { // 从相册返回的数据if (data != null) { // 得到图片的全路径Uri uri = data.getData(); crop(uri); } } else if (requestCode == PHOTO_REQUEST_CAREMA) { // 从相机返回的数据if (hasSdcard()) { crop(Uri.fromFile(tempFile)); } else { Toast.makeText(MainActivity.this, "未找到存储卡，无法存储照片！", Toast.LENGTH_SHORT).show(); } } else if (requestCode == PHOTO_REQUEST_CUT) { // 从剪切图片返回的数据if (data != null) { Bitmap bitmap = data.getParcelableExtra("data"); /** * 获得图片 */iv_img.setImageBitmap(bitmap); //保存到SharedPreferencessaveBitmapToSharedPreferences(bitmap); } try { // 将临时文件删除tempFile.delete(); } catch (Exception e) { e.printStackTrace(); } } super.onActivityResult(requestCode, resultCode, data); } //保存图片到SharedPreferencesprivate void saveBitmapToSharedPreferences(Bitmap bitmap) { // Bitmap bitmap=BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher); //第一步:将Bitmap压缩至字节数组输出流ByteArrayOutputStreamByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(); bitmap.compress(Bitmap.CompressFormat.PNG, 80, byteArrayOutputStream); //第二步:利用Base64将字节数组输出流中的数据转换成字符串Stringbyte[] byteArray = byteArrayOutputStream.toByteArray(); String imageString = new String(Base64.encodeToString(byteArray, Base64.DEFAULT)); //第三步:将String保持至SharedPreferencesSharedPreferences sharedPreferences = getSharedPreferences("testSP", Context.MODE_PRIVATE); SharedPreferences.Editor editor = sharedPreferences.edit(); editor.putString("image", imageString); editor.commit(); //上传头像setImgByStr(imageString,""); } /** * 上传头像 此处使用用的OKHttp post请求上传的图片 * @param imgStr * @param imgName*/public void setImgByStr(String imgStr, String imgName) { String url = "http://appserver。。。。。。。"; Map<String, String> params = new HashMap<String, String>(); params.put("id", "参数值");// params.put("data", imgStr); OkHttp.postAsync(url, params, new OkHttp.DataCallBack() { @Overridepublic void requestFailure(Request request, IOException e) { Log.i("上传失败", "失败" + request.toString() + e.toString()); } @Overridepublic void requestSuccess(String result) throws Exception { Log.i("上传成功", result); } }); } //从SharedPreferences获取图片private void getBitmapFromSharedPreferences(){ SharedPreferences sharedPreferences=getSharedPreferences("testSP", Context.MODE_PRIVATE); //第一步:取出字符串形式的BitmapString imageString=sharedPreferences.getString("image", ""); //第二步:利用Base64将字符串转换为ByteArrayInputStreambyte[] byteArray=Base64.decode(imageString, Base64.DEFAULT); if(byteArray.length==0){ iv_img.setImageResource(R.mipmap.ic_launcher); }else{ ByteArrayInputStream byteArrayInputStream=new ByteArrayInputStream(byteArray); //第三步:利用ByteArrayInputStream生成BitmapBitmap bitmap= BitmapFactory.decodeStream(byteArrayInputStream); iv_img.setImageBitmap(bitmap); } }}//下面是我封装的一个 OKHttp注意：需要在build.gradle 中添加下面这句，然后在同步一下compile 'com.squareup.okhttp3:logging-interceptor:3.4.2'//----------下面是封装的OKHttp类------------------package tckpicture.bwie.com.tackpicture2;import android.os.Handler;import android.os.Looper;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.util.HashMap;import java.util.Map;import java.util.concurrent.TimeUnit;import okhttp3.Call;import okhttp3.Callback;import okhttp3.FormBody;import okhttp3.OkHttpClient;import okhttp3.Request;import okhttp3.RequestBody;import okhttp3.Response;import okhttp3.logging.HttpLoggingInterceptor;/** * Created by fan on 2016/11/9. */public class OkHttp { /** * 静态实例 */private static OkHttp sOkHttpManager; /** * okhttpclient实例 */private OkHttpClient mClient; /** * 因为我们请求数据一般都是子线程中请求，在这里我们使用了handler */private Handler mHandler; /** * 构造方法 */private OkHttp() {// // 可以通过实现 Logger 接口更改日志保存位置HttpLoggingInterceptor loggingInterceptor = new HttpLoggingInterceptor(); loggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BODY);// mClient = new OkHttpClient.Builder().addInterceptor(loggingInterceptor).build();mClient = new OkHttpClient(); /** * 在这里直接设置连接超时.读取超时，写入超时 */OkHttpClient.Builder builder = mClient.newBuilder(); builder.connectTimeout(10, TimeUnit.SECONDS); builder.readTimeout(10, TimeUnit.SECONDS); builder.writeTimeout(10, TimeUnit.SECONDS); builder.addInterceptor(loggingInterceptor); mClient = builder.build(); /** * 如果是用的3.0之前的版本 使用以下直接设置连接超时.读取超时，写入超时 */ //client.setConnectTimeout(10, TimeUnit.SECONDS); //client.setWriteTimeout(10, TimeUnit.SECONDS); //client.setReadTimeout(30, TimeUnit.SECONDS); /** * 初始化handler */mHandler = new Handler(Looper.getMainLooper()); } /** * 单例模式 获取OkHttp实例 * * @return*/public static OkHttp getInstance() { if (sOkHttpManager == null) { sOkHttpManager = new OkHttp(); } return sOkHttpManager; } //-------------------------同步的方式请求数据-------------------------- /** * 对外提供的get方法,同步的方式 * * @param url 传入的地址 * @return*/public static Response getSync(String url) { //通过获取到的实例来调用内部方法return sOkHttpManager.inner_getSync(url); } /** * GET方式请求的内部逻辑处理方式，同步的方式 * * @param url* @return*/private Response inner_getSync(String url) { Request request = new Request.Builder().url(url).build(); Response response = null; try { //同步请求返回的是response对象response = mClient.newCall(request).execute(); } catch (IOException e) { e.printStackTrace(); } return response; } /** * 对外提供的同步获取String的方法 * * @param url* @return*/public static String getSyncString(String url) { return sOkHttpManager.inner_getSyncString(url); } /** * 同步方法 */private String inner_getSyncString(String url) { String result = null; try { /** * 把取得到的结果转为字符串，这里最好用string() */result = inner_getSync(url).body().string(); } catch (IOException e) { e.printStackTrace(); } return result; } //-------------------------异步的方式请求数据--------------------------public static void getAsync(String url, DataCallBack callBack) { getInstance().inner_getAsync(url, callBack); } /** * 内部逻辑请求的方法 * * @param url* @param callBack* @return*/private void inner_getAsync(String url, final DataCallBack callBack) { final Request request = new Request.Builder().url(url).build(); mClient.newCall(request).enqueue(new Callback() { @Overridepublic void onFailure(Call call, IOException e) { deliverDataFailure(request, e, callBack); } @Overridepublic void onResponse(Call call, Response response) throws IOException { String result = null; try { result = response.body().string(); } catch (IOException e) { deliverDataFailure(request, e, callBack); } deliverDataSuccess(result, callBack); } }); } /** * 分发失败的时候调用 * * @param request* @param e* @param callBack*/private void deliverDataFailure(final Request request, final IOException e, final DataCallBack callBack) { /** * 在这里使用异步处理 */mHandler.post(new Runnable() { @Overridepublic void run() { if (callBack != null) { callBack.requestFailure(request, e); } } }); } /** * 分发成功的时候调用 * * @param result* @param callBack*/private void deliverDataSuccess(final String result, final DataCallBack callBack) { /** * 在这里使用异步线程处理 */mHandler.post(new Runnable() { @Overridepublic void run() { if (callBack != null) { try { callBack.requestSuccess(result); } catch (Exception e) { e.printStackTrace(); } } } }); } /** * 数据回调接口 */public interface DataCallBack { void requestFailure(Request request, IOException e); void requestSuccess(String result) throws Exception; } //-------------------------提交表单--------------------------public static void postAsync(String url, Map<String, String> params, DataCallBack callBack) { getInstance().inner_postAsync(url, params, callBack); } private void inner_postAsync(String url, Map<String, String> params, final DataCallBack callBack) { RequestBody requestBody = null; if (params == null) { params = new HashMap<>(); } /** * 如果是3.0之前版本的，构建表单数据是下面的一句 */ //FormEncodingBuilder builder = new FormEncodingBuilder(); /** * 3.0之后版本 */FormBody.Builder builder = new FormBody.Builder(); /** * 在这对添加的参数进行遍历，map遍历有四种方式，如果想要了解的可以网上查找 */for (Map.Entry<String, String> map : params.entrySet()) { String key = map.getKey().toString(); String value = null; /** * 判断值是否是空的 */if (map.getValue() == null) { value = ""; } else { value = map.getValue(); } /** * 把key和value添加到formbody中 */builder.add(key, value); } requestBody = builder.build(); //结果返回 // 请求对象final Request request = new Request.Builder().url(url).post(requestBody).build(); mClient.newCall(request).enqueue(new Callback() { @Overridepublic void onFailure(Call call, IOException e) { deliverDataFailure(request, e, callBack); } @Overridepublic void onResponse(Call call, Response response) throws IOException { String result = response.body().string(); deliverDataSuccess(result, callBack); } }); } //-------------------------文件下载--------------------------public static void downloadAsync(String url, String desDir, DataCallBack callBack) { getInstance().inner_downloadAsync(url, desDir, callBack); } /** * 下载文件的内部逻辑处理类 * * @param url 下载地址 * @param desDir 目标地址 * @param callBack*/private void inner_downloadAsync(final String url, final String desDir, final DataCallBack callBack) { final Request request = new Request.Builder().url(url).build(); mClient.newCall(request).enqueue(new Callback() { @Overridepublic void onFailure(Call call, IOException e) { deliverDataFailure(request, e, callBack); } @Overridepublic void onResponse(Call call, Response response) throws IOException { /** * 在这里进行文件的下载处理 */InputStream inputStream = null; FileOutputStream fileOutputStream = null; try { //文件名和目标地址File file = new File(desDir, getFileName(url)); //把请求回来的response对象装换为字节流inputStream = response.body().byteStream(); fileOutputStream = new FileOutputStream(file); int len = 0; byte[] bytes = new byte[2048]; //循环读取数据while ((len = inputStream.read(bytes)) != -1) { fileOutputStream.write(bytes, 0, len); } //关闭文件输出流fileOutputStream.flush(); //调用分发数据成功的方法deliverDataSuccess(file.getAbsolutePath(), callBack); } catch (IOException e) { //如果失败，调用此方法deliverDataFailure(request, e, callBack); e.printStackTrace(); } finally { if (inputStream != null) { inputStream.close(); } if (fileOutputStream != null) { fileOutputStream.close(); } } } }); } /** * 根据文件url获取文件的路径名字 * * @param url* @return*/private String getFileName(String url) { int separatorIndex = url.lastIndexOf("/"); String path = (separatorIndex < 0) ? url : url.substring(separatorIndex + 1, url.length()); return path; }}//---------------完了-----------------
package tckpicture.bwie.com.tackpicture2;import android.content.Context;import android.content.Intent;import android.content.SharedPreferences;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.support.v7.app.AppCompatActivity;import android.util.Base64;import android.util.Log;import android.view.View;import android.widget.Button;import android.widget.ImageView;import android.widget.Toast;import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.File;import java.io.IOException;import java.util.HashMap;import java.util.Map;import okhttp3.Request;public class MainActivity extends AppCompatActivity implements View.OnClickListener { private ImageView iv_img; private Button bt_camera; private Button bt_xiangce; private static final int PHOTO_REQUEST_CAREMA = 1;// 拍照private static final int PHOTO_REQUEST_GALLERY = 2;// 从相册中选择private static final int PHOTO_REQUEST_CUT = 3;// 结果 /* 头像名称 */private static final String PHOTO_FILE_NAME = "temp_photo.jpg"; private File tempFile; @Overrideprotected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initView(); } private void initView() { iv_img = (ImageView) findViewById(R.id.iv_img); bt_camera = (Button) findViewById(R.id.bt_camera); bt_xiangce = (Button) findViewById(R.id.bt_xiangce);//从SharedPreferences获取图片getBitmapFromSharedPreferences(); bt_camera.setOnClickListener(this); bt_xiangce.setOnClickListener(this); } @Overridepublic void onClick(View v) { switch (v.getId()) { case R.id.bt_camera: // 激活相机Intent intent = new Intent("android.media.action.IMAGE_CAPTURE"); // 判断存储卡是否可以用，可用进行存储if (hasSdcard()) { tempFile = new File(Environment.getExternalStorageDirectory(), PHOTO_FILE_NAME); // 从文件中创建uriUri uri = Uri.fromFile(tempFile); intent.putExtra(MediaStore.EXTRA_OUTPUT, uri); } // 开启一个带有返回值的Activity，请求码为PHOTO_REQUEST_CAREMAstartActivityForResult(intent, PHOTO_REQUEST_CAREMA); break; case R.id.bt_xiangce: // 激活系统图库，选择一张图片Intent intent1 = new Intent(Intent.ACTION_PICK); intent1.setType("image/*"); // 开启一个带有返回值的Activity，请求码为PHOTO_REQUEST_GALLERYstartActivityForResult(intent1, PHOTO_REQUEST_GALLERY); break; } } /** 判断sdcard是否被挂载*/private boolean hasSdcard() { //判断ＳＤ卡手否是安装好的 media_mountedif (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) { return true; } else { return false; } } /* * 剪切图片 */private void crop(Uri uri) { // 裁剪图片意图Intent intent = new Intent("com.android.camera.action.CROP"); intent.setDataAndType(uri, "image/*"); intent.putExtra("crop", "true"); // 裁剪框的比例，1：1intent.putExtra("aspectX", 1); intent.putExtra("aspectY", 1); // 裁剪后输出图片的尺寸大小intent.putExtra("outputX", 250); intent.putExtra("outputY", 250); intent.putExtra("outputFormat", "JPEG");// 图片格式intent.putExtra("noFaceDetection", true);// 取消人脸识别intent.putExtra("return-data", true); // 开启一个带有返回值的Activity，请求码为PHOTO_REQUEST_CUTstartActivityForResult(intent, PHOTO_REQUEST_CUT); } /** * * @param requestCode* @param resultCode* @param data*/@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == PHOTO_REQUEST_GALLERY) { // 从相册返回的数据if (data != null) { // 得到图片的全路径Uri uri = data.getData(); crop(uri); } } else if (requestCode == PHOTO_REQUEST_CAREMA) { // 从相机返回的数据if (hasSdcard()) { crop(Uri.fromFile(tempFile)); } else { Toast.makeText(MainActivity.this, "未找到存储卡，无法存储照片！", Toast.LENGTH_SHORT).show(); } } else if (requestCode == PHOTO_REQUEST_CUT) { // 从剪切图片返回的数据if (data != null) { Bitmap bitmap = data.getParcelableExtra("data"); /** * 获得图片 */iv_img.setImageBitmap(bitmap); //保存到SharedPreferencessaveBitmapToSharedPreferences(bitmap); } try { // 将临时文件删除tempFile.delete(); } catch (Exception e) { e.printStackTrace(); } } super.onActivityResult(requestCode, resultCode, data); } //保存图片到SharedPreferencesprivate void saveBitmapToSharedPreferences(Bitmap bitmap) { // Bitmap bitmap=BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher); //第一步:将Bitmap压缩至字节数组输出流ByteArrayOutputStreamByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(); bitmap.compress(Bitmap.CompressFormat.PNG, 80, byteArrayOutputStream); //第二步:利用Base64将字节数组输出流中的数据转换成字符串Stringbyte[] byteArray = byteArrayOutputStream.toByteArray(); String imageString = new String(Base64.encodeToString(byteArray, Base64.DEFAULT)); //第三步:将String保持至SharedPreferencesSharedPreferences sharedPreferences = getSharedPreferences("testSP", Context.MODE_PRIVATE); SharedPreferences.Editor editor = sharedPreferences.edit(); editor.putString("image", imageString); editor.commit(); //上传头像setImgByStr(imageString,""); } /** * 上传头像 * @param imgStr* @param imgName */public void setImgByStr(String imgStr, String imgName) { String url = "http://appserver.1035.mobi/MobiSoft/User_upLogo"; Map<String, String> params = new HashMap<String, String>(); params.put("id", "11460047");// 11459832params.put("data", imgStr); OkHttp.postAsync(url, params, new OkHttp.DataCallBack() { @Overridepublic void requestFailure(Request request, IOException e) { Log.i("上传失败", "失败" + request.toString() + e.toString()); } @Overridepublic void requestSuccess(String result) throws Exception { Log.i("上传成功", result); } }); } //从SharedPreferences获取图片private void getBitmapFromSharedPreferences(){ SharedPreferences sharedPreferences=getSharedPreferences("testSP", Context.MODE_PRIVATE); //第一步:取出字符串形式的BitmapString imageString=sharedPreferences.getString("image", ""); //第二步:利用Base64将字符串转换为ByteArrayInputStreambyte[] byteArray=Base64.decode(imageString, Base64.DEFAULT); if(byteArray.length==0){ iv_img.setImageResource(R.mipmap.ic_launcher); }else{ ByteArrayInputStream byteArrayInputStream=new ByteArrayInputStream(byteArray); //第三步:利用ByteArrayInputStream生成BitmapBitmap bitmap= BitmapFactory.decodeStream(byteArrayInputStream); iv_img.setImageBitmap(bitmap); } }}
