先上图片和代码（其实应该搞个gif的，不过大家都是有经验的程序员，图片+代码就能理解对吧）
private var mUploadMessage: ValueCallback? = null
private var mUploadCallbackAboveL: ValueCallback>? = null
inner class WebViewClients : WebChromeClient() {
override fun onProgressChanged(webView: WebView?, newProgress: Int) {
pb!!.progress = newProgress
if (newProgress == 100) {
pb!!.visibility = View.GONE
}
super.onProgressChanged(webView, newProgress)
}
override fun onReceivedTitle(webView: WebView?, s: String?) {
super.onReceivedTitle(webView, s)
if (TextUtils.isEmpty(title)) {
widget_title!!.text = wv!!.title
} else {
widget_title!!.text = title
}
title = wv!!.title
}
//4.1
override fun openFileChooser(uploadMsg: ValueCallback, acceptType: String, capture: String) {
openFileChooserImpl(uploadMsg)
}
//5.1
override fun onShowFileChooser(mWebView: WebView, filePathCallback: ValueCallback>, fileChooserParams: WebChromeClient.FileChooserParams): Boolean {
openFileChooserImplForAndroid5(filePathCallback)
return true
}
}
private fun openFileChooserImplForAndroid5(uploadMsg: ValueCallback>) {
mUploadCallbackAboveL = uploadMsg
showWayChooseDialog()
}
//5.0以下的掉用
private fun openFileChooserImpl(uploadMsg: ValueCallback) {
mUploadMessage = uploadMsg
showWayChooseDialog()
}
private var dialog: Dialog? = null
private fun showWayChooseDialog() {
dialog = Dialog(this)
dialog!!.requestWindowFeature(Window.FEATURE_NO_TITLE)
dialog!!.show()
dialog!!.setContentView(R.layout.dialog_my_way)
val dialogWindow = dialog!!.window
dialogWindow!!.setBackgroundDrawableResource(R.color.transparent)
val attributes = dialogWindow.attributes
attributes.width = ViewPager.LayoutParams.MATCH_PARENT
attributes.height = ViewPager.LayoutParams.WRAP_CONTENT
attributes.gravity = Gravity.BOTTOM
dialog!!.window!!.attributes = attributes
dialog!!.setCanceledOnTouchOutside(false)
dialog!!.tv_video1.text = "拍照"
dialog!!.tv_photo.setOnClickListener(View.OnClickListener {
dialog!!.dismiss()
PictureSelectManager.selectPicture().openPhoto(this@WebViewActivity, resultCallback)
})
dialog!!.tv_video.setOnClickListener(View.OnClickListener {
dialog!!.dismiss()
PictureSelectManager.selectPicture().openPhoto(this@WebViewActivity, resultCallback)
})
dialog!!.tv_record.setOnClickListener(View.OnClickListener {
dialog!!.dismiss()
val intent = Intent(this, RecordActivity::class.java)
intent.putExtra("pageUrl", "http://www.baidu.com/")
startActivity(intent)
})
dialog!!.ll_dismiss.setOnClickListener(View.OnClickListener {
resultCallback.onSelectSuccess(var1);
dialog!!.dismiss() })
}
private val resultCallback = PictureConfig.OnSelectResultCallback { resultList ->
if (resultList != null) {
val file = File(resultList[0].compressPath)
val localUri = Uri.fromFile(file)
val localIntent = Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, localUri)
sendBroadcast(localIntent)
if (mUploadCallbackAboveL != null) {
mUploadCallbackAboveL!!.onReceiveValue(arrayOf(Uri.fromFile(file)))
mUploadCallbackAboveL = null
}
if (mUploadMessage != null) {
mUploadMessage!!.onReceiveValue(Uri.fromFile(file)!!)
mUploadMessage = null
}
}
}
复制代码 点击+号弹出选择框，当前代码的问题就是，如果点击取消，或者到图片选择界面点击返回和取消后，再次点击+号，则不会弹出选择框。
然后bug分配给我了（代码是接手前任写的，痛苦中。。），第一时间先测试了web回调接口，我靠居然没有回调（一整小兴奋，可以甩锅给前端），不过兴奋过后想不对啊，为什么选择图片后就不会出现这样的bug呢？那情况应该还是处在了Android端。还是好好想想吧。那选择图片和不选择图片操作有什么差距吗？想到这里第一时间去看PictureSelector的回调方法
private val resultCallback = PictureConfig.OnSelectResultCallback { resultList ->
if (resultList != null) {
val file = File(resultList[0].compressPath)
if (mUploadCallbackAboveL != null) {
mUploadCallbackAboveL!!.onReceiveValue(arrayOf(Uri.fromFile(file)))
mUploadCallbackAboveL = null
}
if (mUploadMessage != null) {
mUploadMessage!!.onReceiveValue(Uri.fromFile(file)!!)
mUploadMessage = null
}
}
}
复制代码果然没有图片的时候没有处理，哈哈哈哈，直接
else{
if (mUploadCallbackAboveL != null) {
mUploadCallbackAboveL!!.onReceiveValue(null)
mUploadCallbackAboveL = null
}
if (mUploadMessage != null) {
mUploadMessage!!.onReceiveValue(null)
mUploadMessage = null
}
}
复制代码又是一通小兴奋（心里大笑，此等小问题岂能难到我），部署测试，what？？？？ 居然不行(心里跑过一群羊驼)，不应该啊？不过现实就是这样，老老实实的在找问题吧。不过我猜是回调没有执行，直接在if前面加了Log，看下有没有回调，原来如此，取消没有回调。 打开PictureSelector源码发现
打开图片选择页面
public void openPhoto(Context mContext, PictureConfig.OnSelectResultCallback resultCall) {
if (!Utils.isFastDoubleClick()) {
if (this.options == null) {
this.options = (new Builder()).create();
}
Intent intent = new Intent(mContext, PictureImageGridActivity.class);
intent.putExtra("function_options", this.options);
mContext.startActivity(intent);
((Activity)mContext).overridePendingTransition(anim.slide_bottom_in, 0);
this.resultCallback = resultCall;
}
}
复制代码取消和返回按钮代码
public void onClick(View view) {
Intent intent = new Intent();
int id = view.getId();
if (id == id.picture_left_back) {
this.activityFinish(1);
} else if (id == id.picture_tv_right) {
this.activityFinish(2);
}
.......
}
private void activityFinish(int type) {
switch(type) {
case 1:
List selectedImages = this.adapter.getSelectedImages();
if (selectedImages == null) {
selectedImages = new ArrayList();
}
this.startActivity((new Intent(this.mContext, PictureAlbumDirectoryActivity.class)).putExtra("previewSelectList", (Serializable)selectedImages).putExtra("function_options", this.options));
this.overridePendingTransition(anim.slide_right_in, anim.slide_right_out);
ImagesObservable.getInstance().notifySelectLocalMediaObserver((List)selectedImages);
this.finish();
break;
case 2:
this.clearData();
EventEntity obj = new EventEntity(2773);
EventBus.getDefault().post(obj);
this.finish();
this.overridePendingTransition(0, anim.slide_bottom_out);
}
}
复制代码 发现取消和返回是不会执行回调接口的，只是finish掉当前界面，这怎么办？ 测试小（老）姐（八）姐（婆）又催了，突然灵光一闪....
选择框“取消”按钮代码
dialog!!.ll_dismiss.setOnClickListener(View.OnClickListener {
resultCallback.onSelectSuccess(var1);
dialog!!.dismiss() })
复制代码重写onResume
var var1:List?=null
override fun onResume() {
super.onResume()
resultCallback.onSelectSuccess(var1);
}
复制代码 修改resultCallback
private val resultCallback = PictureConfig.OnSelectResultCallback { resultList ->
if (resultList != null) {
var1=resultList;
val file = File(resultList[0].compressPath)
val localUri = Uri.fromFile(file)
val localIntent = Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, localUri)
sendBroadcast(localIntent)
if (mUploadCallbackAboveL != null) {
mUploadCallbackAboveL!!.onReceiveValue(arrayOf(Uri.fromFile(file)))
mUploadCallbackAboveL = null
}
if (mUploadMessage != null) {
mUploadMessage!!.onReceiveValue(Uri.fromFile(file)!!)
mUploadMessage = null
}
}else{
if (mUploadCallbackAboveL != null) {
mUploadCallbackAboveL!!.onReceiveValue(null)
mUploadCallbackAboveL = null
}
if (mUploadMessage != null) {
mUploadMessage!!.onReceiveValue(null)
mUploadMessage = null
}
}
}
复制代码部署测试，OK搞定，虽然问题解决了，但我感觉方式并不是很好，希望有好的解决办法的小伙伴，把办法发给我学习一下