WebView上传文件的解决无法调用问题

1 声明全局变量

private ValueCallback<Uri> uploadMessage;

private ValueCallback<Uri[]> uploadMessageAboveL;

private static final int FILE_CHOOSER_RESULT_CODE = 101;

2 重写H5的触发事件

WebChromeClientmWebChromeClient =new WebChromeClient() {

//For Android API < 11 (3.0 OS)

    public void openFileChooser(ValueCallback valueCallback) {

        uploadMessage = valueCallback;

        openImageChooserActivity();

    }

//For Android API >= 11 (3.0 OS)

    public void openFileChooser(ValueCallback valueCallback, String acceptType, String capture) {

        uploadMessage = valueCallback;

        openImageChooserActivity();

    }

//For Android API >= 21 (5.0 OS)

    @Override

    public boolean onShowFileChooser(WebView webView, ValueCallback filePathCallback, WebChromeClient.FileChooserParams fileChooserParams) {

        uploadMessageAboveL = filePathCallback;

        openImageChooserActivity();

        return true;

    }

};

3 重写图片的回调逻辑

public void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == FILE_CHOOSER_RESULT_CODE) { if (null == uploadMessage && null == uploadMessageAboveL) return; Uri result = data == null || resultCode != RESULT_OK ? null : data.getData(); if (uploadMessageAboveL != null) { onActivityResultAboveL(requestCode, resultCode, data); } else if (uploadMessage != null) { uploadMessage.onReceiveValue(result); uploadMessage = null; } } } private void openImageChooserActivity() { Intent i = new Intent(Intent.ACTION_GET_CONTENT); i.addCategory(Intent.CATEGORY_OPENABLE); i.setType("image/*"); startActivityForResult(Intent.createChooser(i, "Image Chooser"), FILE_CHOOSER_RESULT_CODE); } @TargetApi(Build.VERSION_CODES.LOLLIPOP) private void onActivityResultAboveL(int requestCode, int resultCode, Intent intent) { if (requestCode != FILE_CHOOSER_RESULT_CODE || uploadMessageAboveL == null) return; Uri[] results = null; if (resultCode == Activity.RESULT_OK) { if (intent != null) { String dataString = intent.getDataString(); ClipData clipData = intent.getClipData(); if (clipData != null) { results = new Uri[clipData.getItemCount()]; for (int i = 0; i < clipData.getItemCount(); i++) { ClipData.Item item = clipData.getItemAt(i); results[i] = item.getUri(); } } if (dataString != null) results = new Uri[]{Uri.parse(dataString)}; } } uploadMessageAboveL.onReceiveValue(results); uploadMessageAboveL = null; }