Android webview，文件上传，在onActivityResult中设置结果时崩溃

Question

在 Android webview 中，当文件上传选项被点击时，onShowFileChooser 被调用，用户从图片库中选择要上传的文件的 Intent 被调用。选择文件后，在 onActivityResult 内部由于以下原因崩溃

java.lang.IllegalStateException: Duplicate showFileChooser result
        at org.chromium.android_webview.AwWebContentsDelegateAdapter$2.onReceiveValue(AwWebContentsDelegateAdapter.java:225)
        at org.chromium.android_webview.AwWebContentsDelegateAdapter$2.onReceiveValue(AwWebContentsDelegateAdapter.java:220)
        at com.android.webview.chromium.WebViewContentsClientAdapter$4.onReceiveValue(WebViewContentsClientAdapter.java:1063)
        at com.android.webview.chromium.WebViewContentsClientAdapter$4.onReceiveValue(WebViewContentsClientAdapter.java:1047)

Answer 1

@Override
public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathCallback, FileChooserParams fileChooserParams) {
    mActivity.setValueCallback(filePathCallback);
    Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
    intent.addCategory(Intent.CATEGORY_OPENABLE);
    intent.setType("*/*");
    mActivity.startActivityForResult(Intent.createChooser(intent, ""), Final.REQUEST_CODE_ALBUM);
    return true;
}

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