在onShowFileChooser (WebView view, ValueCallback<Uri[]> filePath, WebChromeClient.FileChooserParams fileChooserParams)
函数中,filePath
为null;
Device configuration:
Debug-infos:
Android version: 21
Device: samsung SM-N9005
OS Version: 3.4.0-6408191(N9005DXSGBQA1)
Device: hlte
在其他设备和api级别,它运行正常。
webView.setWebChromeClient(new WebChromeClient() {
// For Android 5.0
public boolean onShowFileChooser(WebView view, ValueCallback<Uri[]> filePath, WebChromeClient.FileChooserParams fileChooserParams) {
//qrCodeReaderView.stopCamera();
mFilePathCallback = filePath;
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
File photoFile = null;
try {
photoFile = createImageFile();
} catch (IOException e) {
e.printStackTrace();
}
mCapturedImageURI = Uri.fromFile(photoFile);
if (photoFile != null) {
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, mCapturedImageURI
);
} else {
}
startActivityForResult(takePictureIntent, INPUT_FILE_REQUEST_CODE);
return true;
}
});
关于活动结果:
@Override public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
mFilePathCallback.onReceiveValue(new Uri[]{mCapturedImageURI});
mFilePathCallback = null;
}
logcat的:
java.lang.RuntimeException:
Unable to resume activity
{com.gaintz/com.shashank.gaintz.WebViewActivity}:
java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=-1, data=null} to activity {com.gaintz/com.shashank.gaintz.WebViewActivity}:
java.lang.NullPointerException: Attempt to invoke interface method 'void android.webkit.ValueCallback.onReceiveValue(java.lang.Object)' on a null object reference at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3390) at
答案 0 :(得分:0)
我知道现在留下答案为时已晚,但是我遇到了同样的问题,因此我解决了这个问题,所以给以后的读者留下答案。
我仅在Android Lollipop(三星银河s4,note3)上遇到过这个问题。
每当我拍照时,filePath始终为空。
通过许多测试,我意识到每次拍照时Webview都会刷新。
它被刷新的原因是“活动导向”。
在Menifest中添加此项,以保留具有网络视图的活动的原始状态。
<activity
...
android:configChanges="orientation|screenSize">