android webview input type file Android WebView 不支持 H5 input type="file" 解决办法
H_VK 人气:0想了解Android WebView 不支持 H5 input type="file" 解决办法的相关内容吗,H_VK在本文为您仔细讲解android webview input type file的相关知识和一些Code实例,欢迎阅读和指正,我们先划重点:android,webview,input,type,file,下面大家一起来学习吧。
最近因为赶项目进度,因此将本来要用原生控件实现的界面,自己做了H5并嵌入webview中。发现点击H5中 input type="file" 标签 不能打开android资源管理器。
通过网络搜索发现是因为 android webview 由于考虑安全原因屏蔽了 input type="file" 这个功能 。
经过不懈的努力,以及google 翻译的帮助 在 stackoverflow 中找到了解决的方法。
具体可以理解为 重写webview 的WebChromeClient ,废话不多说直接贴代码:
private ValueCallback<Uri> mUploadMessage; public ValueCallback<Uri[]> uploadMessage; public static final int REQUEST_SELECT_FILE = 100; private final static int FILECHOOSER_RESULTCODE = 2; webview.setWebChromeClient(new WebChromeClient(){ // For 3.0+ Devices (Start) // onActivityResult attached before constructor protected void openFileChooser(ValueCallback uploadMsg, String acceptType) { mUploadMessage = uploadMsg; Intent i = new Intent(Intent.ACTION_GET_CONTENT); i.addCategory(Intent.CATEGORY_OPENABLE); i.setType("image/*"); startActivityForResult(Intent.createChooser(i, "File Browser"), FILECHOOSER_RESULTCODE); } // For Lollipop 5.0+ Devices @TargetApi(Build.VERSION_CODES.LOLLIPOP) public boolean onShowFileChooser(WebView mWebView, ValueCallback<Uri[]> filePathCallback, WebChromeClient.FileChooserParams fileChooserParams) { if (uploadMessage != null) { uploadMessage.onReceiveValue(null); uploadMessage = null; } uploadMessage = filePathCallback; Intent intent = fileChooserParams.createIntent(); try { startActivityForResult(intent, REQUEST_SELECT_FILE); } catch (ActivityNotFoundException e) { uploadMessage = null; Toast.makeText(getBaseContext(), "Cannot Open File Chooser", Toast.LENGTH_LONG).show(); return false; } return true; } //For Android 4.1 only protected void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) { mUploadMessage = uploadMsg; Intent intent = new Intent(Intent.ACTION_GET_CONTENT); intent.addCategory(Intent.CATEGORY_OPENABLE); intent.setType("image/*"); startActivityForResult(Intent.createChooser(intent, "File Browser"), FILECHOOSER_RESULTCODE); } protected void openFileChooser(ValueCallback<Uri> uploadMsg) { mUploadMessage = uploadMsg; Intent i = new Intent(Intent.ACTION_GET_CONTENT); i.addCategory(Intent.CATEGORY_OPENABLE); i.setType("image/*"); startActivityForResult(Intent.createChooser(i, "File Chooser"), FILECHOOSER_RESULTCODE); } }); } @Override public void onActivityResult(int requestCode, int resultCode, Intent intent) { if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { if (requestCode == REQUEST_SELECT_FILE) { if (uploadMessage == null) return; uploadMessage.onReceiveValue(WebChromeClient.FileChooserParams.parseResult(resultCode, intent)); uploadMessage = null; } } else if (requestCode == FILECHOOSER_RESULTCODE) { if (null == mUploadMessage) return; // Use MainActivity.RESULT_OK if you're implementing WebView inside Fragment // Use RESULT_OK only if you're implementing WebView inside an Activity Uri result = intent == null || resultCode != MainActivity.RESULT_OK ? null : intent.getData(); mUploadMessage.onReceiveValue(result); mUploadMessage = null; } else Toast.makeText(getBaseContext(), "Failed to Upload Image", Toast.LENGTH_LONG).show(); }
以上所述是小编给大家介绍的Android WebView 不支持 H5 input type="file" 解决方法,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对网站的支持!
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