Android WebView H5页面 input type =“file”解决方法

//以下全局变量要加
private ValueCallback<Uri> mUploadMessage;
public ValueCallback<Uri[]> uploadMessage;
public static final int REQUEST_SELECT_FILE = 100;
private final static int FILECHOOSER_RESULTCODE = 2;

//以下方法要在 webView.loadUrl(url);之前调用
//将webview传进来 走一下下面封装好的方法就好了
void setH5Camera(WebView v) {
v.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);
}

});
}

//当然调用系统相机或相册需要回到当前页面 需要把回传值处理一下
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
if (requestCode == REQUEST_SELECT_FILE) {
if (uploadMessage == null)
return;
uploadMessage.onReceiveValue(WebChromeClient.FileChooserParams.parseResult(resultCode, data));
uploadMessage = null;
}
} else if (requestCode == FILECHOOSER_RESULTCODE) {
if (null == mUploadMessage)
return;
Uri result = data == null || resultCode != MainActivity.RESULT_OK ? null : data.getData();
mUploadMessage.onReceiveValue(result);
mUploadMessage = null;
} else {
Toast.makeText(getBaseContext(), "Failed to Upload Image", Toast.LENGTH_LONG).show();
}
}