【移動應(yīng)用開發(fā)技術(shù)】如何解決Android微信分享大圖遇到的問題

【移動應(yīng)用開發(fā)技術(shù)】如何解決Android微信分享大圖遇到的問題

起因：/upload/information/20200623/125/121243.png分享圖片代碼：public

void

WXsharePic(String

transaction,

final

boolean

isSession,

Bitmap

bitmap)

{

//初始化WXImageObject和WXMediaMessage對象

WXImageObject

imageObject

=

new

WXImageObject(bitmap);

WXMediaMessage

msg

=

new

WXMediaMessage();

msg.mediaObject

=

imageObject;

//設(shè)置縮略圖

Bitmap

scaledBitmap

=

Bitmap.createScaledBitmap(bitmap,

200,

200,

true);

bitmap.recycle();

msg.thumbData

=

getBitmapByte(scaledBitmap);

//構(gòu)造一個Req

SendMessageToWX.Req

req

=

new

SendMessageToWX.Req();

req.transaction

=

transaction

+

Long.toString(System.currentTimeMillis());

req.message

=

msg;

//表示發(fā)送給朋友圈

WXSceneTimeline

表示發(fā)送給朋友

WXSceneSession

req.scene

=

isSession

?

SendMessageToWX.Req.WXSceneSession

:

SendMessageToWX.Req.WXSceneTimeline;

//調(diào)用api接口發(fā)送數(shù)據(jù)到微信

api.sendReq(req);

}解決過程：想法一：/upload/information/20200623/125/121244.png想法二：public

static

byte[]

bitmap2Bytes(Bitmap

bitmap,

int

maxkb)

{

ByteArrayOutputStream

output

=

new

ByteArrayOutputStream();

press(Bitmap.CompressFormat.PNG,

100,

output);

int

options

=

100;

while

(output.toByteArray().length

>

maxkb&&

options

!=

10)

{

output.reset();

//清空output

press(Bitmap.CompressFormat.JPEG,

options,

output);//這里壓縮options%，把壓縮后的數(shù)據(jù)存放到output中

options

-=

10;

}

return

output.toByteArray();

}將壓縮率遞減改為1%，并且maxkb設(shè)置為500KB時，就沒問題了！想法三：而Intent傳值有大小限制，最大只能512KB！解決過程：public

void

WXsharePic(String

transaction,

final

boolean

isSession,

Bitmap

bitmap,

String

path)

{

//初始化WXImageObject和WXMediaMessage對象

WXImageObject

imageObject;

if

(!StringUtil.isBlank(path))

{

imageObject

=

new

WXImageObject();

imageObject.setImagePath(path);

}

else

{

imageObject

=

new

WXImageObject(bitmap);

}

WXMediaMessage

msg

=

new

WXMediaMessage();

msg.mediaObject

=

imageObject;

//設(shè)置縮略圖

Bitmap

scaledBitmap

=

Bitmap.createScaledBitmap(bitmap,

200,

200,

true);

bitmap.recycle();

msg.thumbData

=

getBitmapByte(scaledBitmap);

//構(gòu)造一個Req

SendMessageToWX.Req

req

=

new

SendMessageToWX.Req();

req.transaction

=

transaction

+

Long.toString(System.currentTimeMillis());

req.message

=

msg;

//表示發(fā)送給朋友圈

WXSceneTimeline

表示發(fā)送給朋友

WXSceneSession

req.scene

=

isSession

?

SendMessageToWX.Req.WXSceneSession

:

SendMessageToWX.Req.WXSceneTimeline;

//調(diào)用api接口發(fā)送數(shù)據(jù)到微信

api.sendReq(req);

}private

void

shareToMoment()

{

final

Bitmap

sharePicture

=

getBitmapByView(svShare);

AndPermission.with(this)

.permission(Permission.WRITE_EXTERNAL_STORAGE)

.onGranted(new

Action()

{

@Override

public

void

onAction(List<String>

permissions)

{

String

path

=

saveImageToGallery(sharePicture);

WXsharePic("he"

+

System.currentTimeMillis(),

true,

sharePicture,

path);

}

})

.onDenied(new

Action()

{

@Override

public

void

onAction(@NonNull

List<String>

permissions)

{

Log.e("Activity",

"權(quán)限申請失敗");

}

})

.start();

}public

String

saveImageToGallery(Bitmap

bmp)

{

//

首先保存圖片

String

storePath

=

Environment.getExternalStorageDirectory().getAbsolutePath()

+

File.separator

+

"dearxy";

File

appDir

=

new

File(storePath);

if

(!appDir.exists())

{

appDir.mkdir();

}

String

fileName

=

System.currentTimeMillis()

+

".jpg";

File

file

=

new

File(appDir,

fileName);

try

{

FileOutputStream

fos

=

new

FileOutputStream(file);

//通過io流的方式來壓縮保存圖片

p