package com.gxjl.pe.gxjlpesdk.util; import android.Manifest;import android.app.Activity;import android.app.ActivityManager;import android.app.AlertDialog;import android.content.Context;import android.content.DialogInterface;import android.content.Intent;import android.content.pm.PackageManager;import android.graphics.Bitmap;import android.net.Uri;import android.os.Build;import android.provider.MediaStore;import android.support.v4.app.ActivityCompat;import android.support.v4.content.ContextCompat;import android.support.v4.content.FileProvider;import android.widget.Toast; import java.io.ByteArrayOutputStream;import java.io.File;import java.io.IOException;import java.util.ArrayList;import java.util.List; /** * 圖片工具類 * Created by xiaoshuai on 2018/8/17. */ public class ImgUtil { public static final int TAKE_PHOTO = 1;//拍照 public static final int CHOOSE_PHOTO = 2;//選擇相冊 public static final int REQUEST_CODE_CAMERA = 3;//相機權限請求 public static final int REQUEST_CODE_ALBUM = 4;//相冊權限請求 public static Uri imageUri;//相機拍照圖片保存地址  /**  * 選擇圖片，從圖庫、相機  *  * @param activity 上下文  */ public static void choicePhoto(final Activity activity) {  //采用的是系統Dialog作為選擇彈框  new AlertDialog.Builder(activity).setTitle("上傳頭像")//設置對話框標題    .setPositiveButton("拍照", new DialogInterface.OnClickListener() {//添加確定按鈕     @Override     public void onClick(DialogInterface dialog, int which) {      if (Build.VERSION.SDK_INT >= 23) {//檢查相機權限       ArrayList<String> permissions = new ArrayList<>();       if (activity.checkSelfPermission(Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {        permissions.add(Manifest.permission.CAMERA);       }        if (permissions.size() == 0) {//有權限,跳轉        //打開相機-兼容7.0        openCamera(activity);       } else {        activity.requestPermissions(permissions.toArray(new String[permissions.size()]), REQUEST_CODE_CAMERA);       }      } else {       //打開相機-兼容7.0       openCamera(activity);      }     }    }).    setNegativeButton("系統相冊", new DialogInterface.OnClickListener() {     @Override     public void onClick(DialogInterface dialog, int which) {      //如果有權限申請，請在Activity中onRequestPermissionsResult權限返回里面重新調用openAlbum()      if (ContextCompat.checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {       ActivityCompat.requestPermissions(activity, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, REQUEST_CODE_ALBUM);      } else {       openAlbum(activity);      }     }    }).show();//在按鍵響應事件中顯示此對話框 }  /**  * 打開相機  * 兼容7.0  *  * @param activity  */ public static void openCamera(Activity activity) {  // 創建File對象，用于存儲拍照后的圖片  File outputImage = new File(activity.getExternalCacheDir(), "output_image.jpg");  try {   if (outputImage.exists()) {    outputImage.delete();   }   outputImage.createNewFile();  } catch (IOException e) {   e.printStackTrace();  }  if (Build.VERSION.SDK_INT < 24) {   imageUri = Uri.fromFile(outputImage);  } else {   //Android 7.0系統開始 使用本地真實的Uri路徑不安全,使用FileProvider封裝共享Uri   //參數二:fileprovider絕對路徑 com.dyb.testcamerademo：項目包名   imageUri = FileProvider.getUriForFile(activity, "com.mandaotech.ewallet.fileprovider", outputImage);  }  // 啟動相機程序  Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");  intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);  activity.startActivityForResult(intent, TAKE_PHOTO); }  /**  * 打開圖庫  * @param activity  */ public static void openAlbum(Activity activity) {  //調用系統圖庫的意圖  Intent choosePicIntent = new Intent(Intent.ACTION_PICK, null);  choosePicIntent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "image/*");  activity.startActivityForResult(choosePicIntent, CHOOSE_PHOTO);   //打開系統默認的軟件  //Intent intent = new Intent("android.intent.action.GET_CONTENT");  //intent.setType("image/*");  //activity.startActivityForResult(intent, CHOOSE_PHOTO); // 打開相冊 }  /**  * 得到byte[]  * 這里對傳入的圖片Uri壓縮到1M以內，并轉換為byte[]后返回  *  * @param activity 上下文  * @param uri  傳入圖片的Uri  * @return byte[]  */ public static byte[] getImgByteFromUri(Activity activity, Uri uri) throws IOException {  Bitmap bitmap = MediaStore.Images.Media.getBitmap(activity.getContentResolver(), uri);  ByteArrayOutputStream out = new ByteArrayOutputStream();  bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);//100表示不壓縮，直接放到out里面  int options = 90;//壓縮比例  while (out.toByteArray().length / 1024 > 200) { // 循環判斷如果壓縮后圖片是否大于100kb,大于繼續壓縮   out.reset(); // 重置baos即清空baos   bitmap.compress(Bitmap.CompressFormat.JPEG, options, out);// 這里壓縮options%，把壓縮后的數據存放到baos中   options -= 10;// 每次都減少10  }  byte[] bs = out.toByteArray();   return bs; } }

@Override public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {  switch (requestCode) {   case REQUEST_CODE_ALBUM://相冊存儲權限    if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {     ImgUtil.openAlbum(this);    } else {     UiUtil.showToast(this, "選擇圖庫需要同意權限");    }    break;   case REQUEST_CODE_CAMERA://相機拍照權限    if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {//允許     ImgUtil.openCamera(OcrHandReviewActivity.this);    } else {//拒絕     UiUtil.showToast(this, "只有同意相機權限,才能使用掃碼功能");    }    break;   default:  } }

//相機、相冊、剪切 返回 @Override public void onActivityResult(int requestCode, int resultCode, Intent data) {   //正確返回  if (resultCode == RESULT_OK) {   switch (requestCode) {    case ImgUtil.TAKE_PHOTO://相機返回     Log.e("返回相機", ImgUtil.imageUri.toString());    GlideApp.with(ElecIdPAActivity.this)        .load(ImgUtil.imageUri)        .skipMemoryCache(true)        .diskCacheStrategy( DiskCacheStrategy.NONE )        .into(iv_zhengmain_photo);     break;    case ImgUtil.CHOOSE_PHOTO://相冊返回     try {      if (data != null) {       //相冊返回       Uri uri = data.getData();       Log.e("返回相冊", uri.toString());    GlideApp.with(ElecIdPAActivity.this)   .load(uri)   .skipMemoryCache(true)   .diskCacheStrategy( DiskCacheStrategy.NONE )   .into(iv_zhengmain_photo);      }     } catch (Exception e) {      e.printStackTrace();      UiUtil.showToast(this, "圖片選擇失敗");     }     break;   }  } else {   UiUtil.showToast(this, "圖片選擇失敗");  } }

<!--獲取sd卡寫的權限，用于文件上傳和下載--> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/> <!--允許讀取手機狀態--> <uses-permission android:name="android.permission.READ_PHONE_STATE"/> <!-- 相機權限 --> <uses-permission android:name="android.permission.CAMERA"/> <uses-permission android:name="android.permission.VIBRATE"/> <uses-permission android:name="android.permission.FLASHLIGHT"/> <application  <!--7.0相機權限-->  <provider   android:name="android.support.v4.content.FileProvider"   android:authorities="com.dyb.testcamerademo.fileprovider"   android:exported="false"   android:grantUriPermissions="true">   <meta-data    android:name="android.support.FILE_PROVIDER_PATHS"    android:resource="@xml/file_paths"/>  </provider>

<?xml version="1.0" encoding="utf-8"?><paths xmlns:android="http://schemas.android.com/apk/res/android">  <!-- name屬性的值可以隨便寫,別名 path屬性的值表示共享的具體位置，設置空就表示將整個SD卡進行共享  --> <paths>  <external-path   name="camera_photos"   path=""/> </paths></paths>