/** * 系统分享图片功能 * Created by wiky on 2018/1/13. */object Util { fun startShareImage(activity: Activity) { //过滤出需要分享到对应的平台：微信好友、朋友圈、QQ好友。 可自行修改 val targetApp = arrayOf("com.tencent.mm.ui.tools.ShareImgUI", "com.tencent.mm.ui.tools.ShareToTimeLineUI", "com.tencent.mobileqq.activity.JumpActivity") /** * 分享图片 */ val bitmap = getImageFromAssetsFile(activity, "img_share.jpg") //从assets目录中取到对应的文件，文件名自行修改 val localImage = saveBitmap(bitmap!!, "share.jpg") //分享前，需要先将图片存在本地（记得添加权限），文件名自行修改 val shareIntent = Intent(Intent.ACTION_SEND) shareIntent.type = "image/*" //设置分享内容的类型：图片 shareIntent.putExtra(Intent.EXTRA_STREAM, localImage) try { val resInfo = activity.packageManager.queryIntentActivities(shareIntent, 0) if (!resInfo.isEmpty()) { val targetedShareIntents = ArrayList<Intent>() for (info in resInfo) { val targeted = Intent(Intent.ACTION_SEND) targeted.type = "image/*" //设置分享内容的类型 val activityInfo = info.activityInfo //如果还需要分享至其它平台，可以打印出具体信息，然后找到对应的Activity名称，填入上面的数组中即可// println("package = ${activityInfo.packageName}, activity = ${activityInfo.name}") //进行过滤（只显示需要分享的平台） if (targetApp.any { it == activityInfo.name }) { val comp = ComponentName(activityInfo.packageName, activityInfo.name) targeted.component = comp targeted.putExtra(Intent.EXTRA_STREAM, localImage) targetedShareIntents.add(targeted) } } val chooserIntent = Intent.createChooser(targetedShareIntents.removeAt(0), "选择要分享到的平台") if (chooserIntent != null) { chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, targetedShareIntents.toTypedArray<Parcelable>()) activity.startActivity(chooserIntent) } } } catch (e: Exception) { Log.e(StatConstants.LOG_TAG, "Unable to share image, logs : " + e.toString()) } } /** * 从Assets中读取图片 */ private fun getImageFromAssetsFile(context: Context, fileName: String): Bitmap? { var image: Bitmap? = null val am = context.resources.assets try { val inputStream = am.open(fileName) image = BitmapFactory.decodeStream(inputStream) inputStream.close() } catch (e: IOException) { e.printStackTrace() } return image } /** * 将图片存到本地 */ private fun saveBitmap(bm: Bitmap, picName: String): Uri? { try { val dir = Environment.getExternalStorageDirectory().absolutePath + File.separator + picName val f = File(dir) if (!f.exists()) { f.parentFile.mkdirs() f.createNewFile() } val out = FileOutputStream(f) bm.compress(Bitmap.CompressFormat.JPEG, 90, out) out.flush() out.close() return Uri.fromFile(f) } catch (e: FileNotFoundException) { e.printStackTrace() } catch (e: IOException) { e.printStackTrace() } return null }} 
