Android 获取相机 ：
需要的的权限
Manfest.permission.WRITE_EXTERNAL_STORAGE
需要注意运行时权限
intent.addFlags(Intent.
FLAG_GRANT_READ_URI_PERMISSION
)
//增加读取 Uri 权限
以及
FileProvider
的使用
获取相册及相机方法
/**
* 获取相机 已适配7.0
*
*
@param
activity
*/
public synchronized void
userCamera
(Activity activity) {
if
(!EaseCommonUtils.
isSdcardExist
()) {
Toast.
makeText
(activity
,
R.string.
sd_card_does_not_exist
,
Toast.
LENGTH_SHORT
).show()
;
return;
}
MyRequestPermission.
getInstance
(activity).setOnRequestPermissionListener(result -> {
if
(result) {
camera(
activity
)
;
}
else
{
Toast.
makeText
(
activity
,
"读取SD卡权限申请被拒,相机无法启动"
,
Toast.
LENGTH_SHORT
).show()
;
}
})
;
boolean
checkPermission = MyRequestPermission.
getInstance
(activity).isCheckPermission(
new
String[]{Manifest.permission.
WRITE_EXTERNAL_STORAGE
})
;
Observable<Boolean> observable = Observable.
create
(e -> e.onNext(
checkPermission
))
;
observable.filter(aBoolean -> {
if
(!aBoolean)
Toast.
makeText
(
activity
,
"读取SD卡权限申请被拒,相机无法启动"
,
Toast.
LENGTH_SHORT
).show()
;
return
aBoolean
;
}).subscribe(aBoolean -> camera(
activity
))
;
}
private void
camera
(Activity activity) {
Intent intent =
new
Intent(MediaStore.
ACTION_IMAGE_CAPTURE
)
;
file
=
new
File(Environment.
getExternalStorageDirectory
().getAbsolutePath() +
"/test/"
+ System.
currentTimeMillis
() +
".jpg"
)
;
file
.getParentFile().mkdirs()
;
Uri uriForFile = FileProvider.
getUriForFile
(activity
,
"com.tiancai.tcggsc.fileprovider"
,
file
)
;
intent.addFlags(Intent.
FLAG_GRANT_READ_URI_PERMISSION
)
//增加读取 Uri 权限
.putExtra(MediaStore.
EXTRA_OUTPUT
,
uriForFile)
;
activity.startActivityForResult(intent
,
Constant.
REQUEST_CAMERA
)
;
}
/**
*
打开相册
*
@param
activity
当前activity
*/
public void
openPic
(Activity activity) {
if
(!EaseCommonUtils.
isSdcardExist
()) {//是否存在SD卡
Toast.
makeText
(activity
,
R.string.
sd_card_does_not_exist
,
Toast.
LENGTH_SHORT
).show()
;
return;
}
MyRequestPermission.
getInstance
(activity).setOnRequestPermissionListener(result -> {
if
(result) {
openPicture(
activity
)
;
}
else
{
Toast.
makeText
(
activity
,
"读取SD卡权限申请被拒,无法打开相册"
,
Toast.
LENGTH_SHORT
).show()
;
}
})
;
boolean
checkPermission = MyRequestPermission.
getInstance
(activity).isCheckPermission(
new
String[]{Manifest.permission.
WRITE_EXTERNAL_STORAGE
})
;
Observable<Boolean> observable = Observable.
create
(e -> e.onNext(
checkPermission
))
;
observable.filter(aBoolean -> {
if
(!aBoolean)
Toast.
makeText
(
activity
,
"读取SD卡权限申请被拒,无法打开相册"
,
Toast.
LENGTH_SHORT
).show()
;
return
aBoolean
;
}).subscribe(aBoolean -> openPicture(
activity
))
;
}
private void
openPicture
(Activity activity){
Intent photoPickerIntent =
new
Intent(Intent.
ACTION_PICK
,
android.provider.MediaStore.Images.Media.
EXTERNAL_CONTENT_URI
)
;
photoPickerIntent.setAction(Intent.
ACTION_GET_CONTENT
)
;
photoPickerIntent.setType(
"image/*"
)
;
activity.startActivityForResult(photoPickerIntent
,
Constant.
REQUEST_PHOTO_ALBUM
)
;
}
activity 方法
@Override
public void
onRequestPermissionsResult
(
int
requestCode
,
@android.support.annotation.NonNull
String[] permissions
,
@android.support.annotation.NonNull
int
[] grantResults) {
super
.onRequestPermissionsResult(requestCode
,
permissions
,
grantResults)
;
MyRequestPermission.
getInstance
(
this
).onRequestPermissionsResult(requestCode
,
permissions
,
grantResults)
;
}
@Override
protected void
onActivityResult
(
int
requestCode
, int
resultCode
,
Intent data) {
super
.onActivityResult(requestCode
,
resultCode
,
data)
;
if
(resultCode ==
RESULT_OK
) {
switch
(requestCode) {
case
Constant.
REQUEST_CAMERA
:
File file = FileUtil.
getInstance
().getFile()
;
imgSetUserIcon
.setImageURI(Uri.
fromFile
(file))
;
//在手机相册中显示刚拍摄的图片
Intent mediaScanIntent =
new
Intent(Intent.
ACTION_MEDIA_SCANNER_SCAN_FILE
)
;
Uri contentUri = Uri.
fromFile
(file)
;
mediaScanIntent.setData(contentUri)
;
sendBroadcast(mediaScanIntent)
;
break;
case
Constant.
REQUEST_PHOTO_ALBUM
:
//
if
(Build.VERSION.
SDK_INT
>=
19
) {//注意4.4读取图片路径 不相同
handleImageOnKitKat(data)
;
}
else
{
handleImageBeforeKitKat(data)
;
}
break;
}
}
}
@RequiresApi
(
api
= Build.VERSION_CODES.
KITKAT
)
private void
handleImageOnKitKat
(Intent data) {
String imagePath =
null;
Uri uri = data.getData()
;
if
(DocumentsContract.
isDocumentUri
(
this,
uri)) {
String docId = DocumentsContract.
getDocumentId
(uri)
;
if
(
"com.android.providers.media.documents"
.equals(uri.getAuthority())) {
String id = docId.split(
":"
)[
1
]
;
String selection = MediaStore.Images.Media.
_ID
+
"="
+ id
;
imagePath = getImagePath(MediaStore.Images.Media.
EXTERNAL_CONTENT_URI
,
selection)
;
}
else if
(
"com.android.provider.downloads.documents"
.equals(uri.getAuthority())) {
Uri contentUri = ContentUris.
withAppendedId
(Uri.
parse
(
"content://downloads/public_downloads"
)
,
Long.
valueOf
(docId))
;
imagePath = getImagePath(contentUri
, null
)
;
}
}
else if
(
"content"
.equalsIgnoreCase(uri.getScheme())) {
imagePath = getImagePath(uri
, null
)
;
}
else if
(
"file"
.equalsIgnoreCase(uri.getScheme())) {
imagePath = uri.getPath()
;
}
displayImage(imagePath)
;
}
private void
handleImageBeforeKitKat
(Intent data) {
String imagePath =
null;
Uri uri = data.getData()
;
imagePath = getImagePath(uri
, null
)
;
displayImage(imagePath)
;
}
// getImagePath的实现:
private
String
getImagePath
(Uri uri
,
String selection) {
String Path =
null;
Cursor cursor = getContentResolver().query(uri
, null,
selection
, null, null
)
;
if
(cursor !=
null
) {
if
(cursor.moveToFirst()) {
Path = cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media.
DATA
))
;
}
cursor.close()
;
}
return
Path
;
}
// displayImage的实现:
private void
displayImage
(String Path) {
Bitmap bm = BitmapFactory.
decodeFile
(Path)
;
imgSetUserIcon
.setImageBitmap(bm)
;
}