Android Q存储SD卡-Android29 存储外置SD卡

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我是靠谱客的博主凶狠老鼠，这篇文章主要介绍Android Q存储SD卡-Android29 存储外置SD卡，现在分享给大家，希望可以做个参考。

最近公司相机升级到AndroidQ 遇到无法存储SD卡，原来是Goole抛弃了原有的API(不是过时,是抛弃,导致之前的存储API不能用)查看Google API 进行了代码更换, 在在更换过程中遇到了比较多的坑，将部分关键代码记录下来，方便下次使用。

如果不使用外置可插拔SD卡的AndroidQ存储可以使用如下方法暂时不用 AndroidQ的存储方式

在AndroidManifest.xml 中添加android:requestLegacyExternalStorage="true"即可如下

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 <application
......省略代码
android:requestLegacyExternalStorage="true"
.
<activity>
.......... 省略代码
</activity>
</application>

如果是AndroidQ上可插拔SD卡请看下面的方法;

Android 获取SD卡名称的时候区分大小写，我们用getUUid获取的是SD卡的大写名称,而Android只识别SD的小写名称,不知道是不是Bug,此坑比较深,一定切记。

如下是存储图片的关键代码

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public static boolean writeFile(ContentResolver contentResolver, String title, String path, byte[] data) {
FileOutputStream out = null;
try {
if (isSaveSDCard() && SDCard.instance().isWriteable()){
ContentValues values = new ContentValues();
values.put(MediaStore.Images.Media.DISPLAY_NAME, title);
values.put(MediaStore.Images.Media.MIME_TYPE, "image/jpeg");
values.put(MediaStore.Images.Media.RELATIVE_PATH, Environment.DIRECTORY_DCIM+"/Camera/"); //修改路径
Uri collection = MediaStore.Images.Media.getContentUri(SDCard.instance().getSdCardExternalVolumeName());
Uri item = contentResolver.insert(collection, values);//获取插入路径
Log.d("chencl_","
item insert
Uri : " +item);
ParcelFileDescriptor pfd = contentResolver.openFileDescriptor(item, "rw", null);
if (pfd != null){
out = (FileOutputStream) contentResolver.openOutputStream(item);
if (out != null) {
out.write(data);
}
}
} else {
out = new FileOutputStream(path);
out.write(data);
}
} catch (Exception e) {
Log.e(TAG, "Failed to write data", e);
return false;
} finally {
try {
if (out != null) {
out.close();
}
} catch (Exception e) {
Log.e(TAG, "Failed to close file after write", e);
}
}
return true;
}

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public static boolean writeFile(ContentResolver contentResolver, String title, String path, byte[] data) {
FileOutputStream out = null;
try {
if (isSaveSDCard() && SDCard.instance().isWriteable()){
ContentValues values = new ContentValues();
values.put(MediaStore.Images.Media.DISPLAY_NAME, title);
values.put(MediaStore.Images.Media.MIME_TYPE, "image/jpeg");
values.put(MediaStore.Images.Media.RELATIVE_PATH, Environment.DIRECTORY_DCIM+"/Camera/"); //修改路径
Uri collection = MediaStore.Images.Media.getContentUri(SDCard.instance().getSdCardExternalVolumeName());
Uri item = contentResolver.insert(collection, values);//获取插入路径
Log.d("chencl_","
item insert
Uri : " +item);
ParcelFileDescriptor pfd = contentResolver.openFileDescriptor(item, "rw", null);
if (pfd != null){
out = (FileOutputStream) contentResolver.openOutputStream(item);
if (out != null) {
out.write(data);
}
}
} else {
out = new FileOutputStream(path);
out.write(data);
}
} catch (Exception e) {
Log.e(TAG, "Failed to write data", e);
return false;
} finally {
try {
if (out != null) {
out.close();
}
} catch (Exception e) {
Log.e(TAG, "Failed to close file after write", e);
}
}
return true;
}

如下是进行视频录像传路径的代码

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Log.v(TAG, "New video filename: " + path);
if (Storage.isSaveSDCard() && SDCard.instance().isWriteable()) {
mCurrentVideoValues.put(MediaStore.Video.Media.RELATIVE_PATH, Environment.DIRECTORY_DCIM+"/Camera");
Uri collection = MediaStore.Video.Media.getContentUri(SDCard.instance().getSdCardExternalVolumeName());
Uri item = mContentResolver.insert(collection, mCurrentVideoValues);
try (ParcelFileDescriptor pfd = mContentResolver.openFileDescriptor(item, "rw", null)) {
ParcelFileDescriptor parcelFileDescriptor = ParcelFileDescriptor.fromFd(pfd.getFd());//必须转化一下不然录像提示无次文件
mMediaRecorder.setOutputFile(parcelFileDescriptor.getFileDescriptor());
// Write data into the pending image.
} catch (IOException e) {
e.printStackTrace();
}
} else {
mMediaRecorder.setOutputFile(path);
}

获取SD卡名称

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public
String getSdCardExternalVolumeName() {
ArrayList<String> volumenames = new ArrayList<>( MediaStore.getExternalVolumeNames(mContext));
return
(volumenames.size() > VOLUME_SDCARD_INDEX) ?
volumenames.get(VOLUME_SDCARD_INDEX) : null;
}

获取SD卡的 Volume VOLUME_SDCARD_INDEX =1 为可插拔SD卡 VOLUME_SDCARD_INDEX =0 为内置ＳＤ卡

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private void initVolume() {
final StorageVolume[] volumes = ReflectionUtils.getVolumeList(mStorageManager);
mVolume = (volumes.length > VOLUME_SDCARD_INDEX) ?
volumes[VOLUME_SDCARD_INDEX] : null;
mPath = null;
mRawpath = null;
}

判断是否存在SD卡

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public static StorageVolume[] getVolumeList(StorageManager storageManager) {
StorageVolume[] result = null;
try {
Class storageManagerCls = Class.forName("android.os.storage.StorageManager");
Method getVolumeListMethod = storageManagerCls.getMethod("getVolumeList");
getVolumeListMethod.setAccessible(true);
result = (StorageVolume[]) getVolumeListMethod.invoke(storageManager);
} catch (Exception e) {
Log.e(TAG, "getVolumeList Exp:" + expToString(e));
return result;
}
if (DEBUG) {
Log.d(TAG, "getVolumeList result:" + result);
}
return result;
}