Android WebView不支持H5输入type =“file”解决方法

喜欢ヅ旅行 2022-06-11 06:57 256阅读 0赞

<input style="width: 0px; height: 0px;" id="image" type="file" accept="image/*">
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    上面的代码是H5里面的，我通过网页查看源码拿出来的，看了很多文章，我才知道，Android中webview却屏蔽了这个type =“file”这个功能，说是为了安全起见，真是搞不开始
    我很迷茫，用手机可以打开网址，点击按钮可以打开相册，iOS也可以，尼玛，android就是没反应，有的机型甚至还崩溃，无语，苦闷，没办法，到群里去问，有个哥们很好，给了我点建议，和一些文章查看，终于搞定了。
    说那么多，么有，上代码：
    
     private WebView wv;
        private String url ="http://shanghai.job1s.com/wap/member/index.php?c=photo";
    
        private ValueCallback<Uri> mUploadMessage;
        public ValueCallback<Uri[]> uploadMessage;
        public static final int REQUEST_SELECT_FILE = 100;
        private final static int FILECHOOSER_RESULTCODE = 2;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            wv = (WebView) findViewById(R.id.webview);
            //设置支持Javascript
            wv.getSettings().setJavaScriptEnabled(true);  
    
            wv.loadUrl(url);
            wv.setWebViewClient(new WebViewClient() {
                @Override
                public boolean shouldOverrideUrlLoading(WebView view, String url) {
                    //返回值是true的时候控制去WebView打开，为false调用系统浏览器或第三方浏览器
                    view.loadUrl(url);
                    return false;
                }
    
                @Override
                public void onPageStarted(WebView view, String url, Bitmap favicon) {
                }
    
                @Override
                public void onPageFinished(WebView view, String url) {
                }
            });
    
    
            wv.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();
        }