webview上傳圖片

在一個項目中用到的，webview中選擇相冊的圖片上傳，關鍵代碼如下：

private ValueCallback<Uri> mUploadMessage;
private final static int FILECHOOSER_RESULTCODE = 1;
mWebView.setWebChromeClient(new MyWebClient());
//自定義webviewClient
public class MyWebClient extends WebChromeClient {
        // For Android 3.0-
        public 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);
        }


    // For Android 3.0+
    public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType) {
        mUploadMessage = uploadMsg;
        Intent i = new Intent(Intent.ACTION_GET_CONTENT);
        i.addCategory(Intent.CATEGORY_OPENABLE);
        i.setType("*/*");
        startActivityForResult(Intent.createChooser(i, "File Browser"), FILECHOOSER_RESULTCODE);
    }

    // For Android 4.1
    public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {
        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
protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
    if (requestCode == FILECHOOSER_RESULTCODE) {
        if (null == mUploadMessage)
        return;
    Uri result = intent == null || resultCode != RESULT_OK ? null : intent.getData();
    mUploadMessage.onReceiveValue(result);
    mUploadMessage = null;
    }
}</pre>