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

2017-08-01 20:53 776 查看
<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();
}
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标签:  android webview