package com.anthony.library.utils;
import android.annotation.TargetApi;
import android.app.Activity;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.provider.DocumentsContract;
import android.provider.MediaStore;
import android.support.v7.app.AlertDialog;
import com.bumptech.glide.Glide;
import com.bumptech.glide.request.FutureTarget;
import rx.Observable;
import rx.functions.Func1;
/**
* 图片工具类
*/
public class ImageUtils {
/**
* 拍照
*/
public static final int REQUEST_CODE_FROM_CAMERA = 1 << 10;
/**
* 相册
*/
public static final int REQUEST_CODE_FROM_ALBUM = 1 << 12;
/**
* 裁剪
*/
public static final int REQUEST_CODE_CROP_IMAGE = 1 << 14;
/**
* 存放拍照图片的uri地址
*/
public static Uri imageUriFromCamera;
/**
* 存放裁剪图片的uri地址
*/
public static Uri cropImageUri;
/**
* 显示获取照片不同方式对话框
*/
public static void showImagePickDialog(final Activity activity) {
showImagePickDialog(activity, 0);
}
/**
* 显示获取照片不同方式对话框
*/
public static void showImagePickDialog(final Activity activity, final int addRequest) {
String title = "选择获取图片方式";
String[] items = new String[]{"拍照", "相册"};
new AlertDialog.Builder(activity)
.setTitle(title)
.setItems(items, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
switch (which) {
case 0:
pickImageFromCamera(activity, addRequest);
break;
case 1:
pickImageFromAlbum(activity, addRequest);
break;
default:
break;
}
}
})
.setNegativeButton("取消", null)
.show();
}
/**
* 打开相机拍照获取图片
*/
@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
public static void pickImageFromCamera(final Activity activity, int addRequest) {
// 先生成一个uri地址用于存放拍照获取的图片
imageUriFromCamera = createImageUri(activity);
Intent intent = new Intent();
intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUriFromCamera);
activity.startActivityForResult(intent, REQUEST_CODE_FROM_CAMERA + addRequest);
}
/**
* 打开相机拍照获取图片
*/
public static void pickImageFromCamera(final Activity activity) {
pickImageFromCamera(activity, 0);
}
/**
* 打开本地相册选取图片
*/
@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
public static void pickImageFromAlbum(final Activity activity, int addRequest) {
Intent intent = new Intent();
intent.setAction(Intent.ACTION_GET_CONTENT);
intent.setType("image/*");
activity.startActivityForResult(intent, REQUEST_CODE_FROM_ALBUM + addRequest);
}
/**
* 打开本地相册选取图片
*/
public static void pickImageFromAlbum(final Activity activity) {
pickImageFromAlbum(activity, 0);
}
/**
* 压缩图片
*
* @param context
* @param uri 图片uri
* @param reqW 上传图片需要压缩的宽度
* @param reqH 上传图片需要压缩的高度
* @return 上传成功回调
*/
public static Observable<byte[]> compressImage(final Context context,
Uri uri,
final int reqW,
final int reqH) {
// 先从本地获取图片,利用Glide压缩图片后获取byte[]
return Observable.just(uri)
.flatMap(new Func1<Uri, Observable<byte[]>>() {
@Override
public Observable<byte[]> call(Uri uri) {
// 在work线程中，同步压缩图片，然后Observable返回
// 即将Glide的回调封装成RxJava的Observable
FutureTarget<byte[]> future = Glide.with(context)
.load(uri)
.asBitmap()
.toBytes()
.into(reqW, reqH);
byte[] bytes;
try {
bytes = future.get();
} catch (Exception e) {
// 获取失败时，抛出runtime异常
// 该异常会被Subscriber捕捉，进onError
throw new RuntimeException(e);
}
return Observable.just(bytes);
}
});
}
/**
* 图片裁剪
*/
public static void cropImage(Activity activity, Uri srcUri) {
cropImageUri = createImageUri(activity);
Intent intent = new Intent("com.android.camera.action.CROP");
intent.setDataAndType(srcUri, "image/*");
intent.putExtra("crop", "true");
////////////////////////////////////////////////////////////////
// 1.宽高和比例都不设置时,裁剪框可以自行调整(比例和大小都可以随意调整)
////////////////////////////////////////////////////////////////
// 2.只设置裁剪框宽高比(aspect)后,裁剪框比例固定不可调整,只能调整大小
/////////////////////////////////
// 3.裁剪后生成图片宽高(output)的设置和裁剪框无关,只决定最终生成图片大小
////////////////////////////////////////////////////////////////
// 4.裁剪框宽高比例(aspect)可以和裁剪后生成图片比例(output)不同,此时,
// 会以裁剪框的宽为准,按照裁剪宽高比例生成一个图片,该图和框选部分可能不同,
// 不同的情况可能是截取框选的一部分,也可能超出框选部分,向下延伸补足
////////////////////////////////////////////////////////////////
// aspectX aspectY 是裁剪框宽高的比例
intent.putExtra("aspectX", 1);
intent.putExtra("aspectY", 1);
// outputX outputY 是裁剪后生成图片的宽高
// intent.putExtra("outputX", 300);
// intent.putExtra("outputY", 100);
// return-data为true时,会直接返回bitmap数据,但是大图裁剪时会出现OOM,推荐下面为false时的方式
// return-data为false时,不会返回bitmap,但需要指定一个MediaStore.EXTRA_OUTPUT保存图片uri
intent.putExtra("return-data", false);
intent.putExtra(MediaStore.EXTRA_OUTPUT, cropImageUri);
activity.startActivityForResult(intent, REQUEST_CODE_CROP_IMAGE);
}
/**
* 创建一条图片uri,用于保存拍照后的照片
*/
private static Uri createImageUri(Context context) {
String name = "boreImg" + System.currentTimeMillis();
ContentValues values = new ContentValues();
values.put(MediaStore.Images.Media.TITLE, name);
values.put(MediaStore.Images.Media.DISPLAY_NAME, name + ".jpeg");
values.put(MediaStore.Images.Media.MIME_TYPE, "image/jpeg");
Uri uri = context.getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
return uri;
}
/**
* 删除一条图片
*/
public static void deleteImageUri(Context context, Uri uri) {
context.getContentResolver().delete(uri, null, null);
}
/**
* 用第三方应用app打开图片
*/
public static void openImageByOtherApp(Context context, Uri imageUri) {
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
intent.setDataAndType(imageUri, "image/*");
context.startActivity(intent);
}
/**
* 根据Uri获取图片绝对路径，解决Android4.4以上版本Uri转换
*/
public static String getImageAbsolutePath19(Context context, Uri imageUri) {
if (context == null || imageUri == null)
return null;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT
&& DocumentsContract.isDocumentUri(context, imageUri)) {
if (isExternalStorageDocument(imageUri)) {
String docId = DocumentsContract.getDocumentId(imageUri);
String[] split = docId.split(":");
String type = split[0];
if ("primary".equalsIgnoreCase(type)) {
return Environment.getExternalStorageDirectory() + "/" + split[1];
}
} else if (isDownloadsDocument(imageUri)) {
String id = DocumentsContract.getDocumentId(imageUri);
Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
return getDataColumn(context, contentUri, null, null);
} else if (isMediaDocument(imageUri)) {
String docId = DocumentsContract.getDocumentId(imageUri);
String[] split = docId.split(":");
String type = split[0];
Uri contentUri = null;
if ("image".equals(type)) {
contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
} else if ("video".equals(type)) {
contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
} else if ("audio".equals(type)) {
contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
}
String selection = MediaStore.Images.Media._ID + "=?";
String[] selectionArgs = new String[]{split[1]};
return getDataColumn(context, contentUri, selection, selectionArgs);
}
}
// MediaStore (and general)
if ("content".equalsIgnoreCase(imageUri.getScheme())) {
// Return the remote address
if (isGooglePhotosUri(imageUri))
return imageUri.getLastPathSegment();
return getDataColumn(context, imageUri, null, null);
}
// File
else if ("file".equalsIgnoreCase(imageUri.getScheme())) {
return imageUri.getPath();
}
return null;
}
private static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {
Cursor cursor = null;
String column = MediaStore.Images.Media.DATA;
String[] projection = {column};
try {
cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
if (cursor != null && cursor.moveToFirst()) {
int index = cursor.getColumnIndexOrThrow(column);
return cursor.getString(index);
}
} finally {
if (cursor != null)
cursor.close();
}
return null;
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is ExternalStorageProvider.
*/
private static boolean isExternalStorageDocument(Uri uri) {
return "com.android.externalstorage.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is DownloadsProvider.
*/
private static boolean isDownloadsDocument(Uri uri) {
return "com.android.providers.downloads.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is MediaProvider.
*/
private static boolean isMediaDocument(Uri uri) {
return "com.android.providers.media.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is Google Photos.
*/
private static boolean isGooglePhotosUri(Uri uri) {
return "com.google.android.apps.photos.content".equals(uri.getAuthority());
}
}