Android WebView 不支持 H5 input type="file" 解决方法

学无止境，每天都在进步，是我最快乐的事情！

"width: 0px; height: 0px;" id="image" type="file" accept="image/*">

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，真是搞不懂！
起初我很迷茫，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，苦恼，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 mUploadMessage;    public ValueCallback 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 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 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 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();    }

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