选择"在 Webview 4.2.2 (Android Studio) 中文件"

Question

我尝试在webview 4.2.2的html页面中输入图像文件 但是输入文件不起作用。你有我的问题的解决方案吗？ 请帮助我

这是我的代码(Tambah.java(：

public class Tambah extends Activity {
private TextView text2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.tambah);
final WebView myWebView = (WebView) findViewById(R.id.webPage);
WebSettings webSettings = myWebView.getSettings();
webSettings.setJavaScriptEnabled(true);
myWebView.loadUrl("http://192.168.1.104/safa/tambah");
myWebView.setOnKeyListener(new View.OnKeyListener()
{
@Override
public boolean onKey(View v, int keyCode, KeyEvent event)
{
if(event.getAction() == KeyEvent.ACTION_DOWN)
{
WebView myWebView = (WebView) v;
switch(keyCode)
{
case KeyEvent.KEYCODE_BACK:
if(myWebView.canGoBack())
{
myWebView.goBack();
return true;
}
break;
}
}
return false;
}
});
}

}

Answer 1

您必须在WebChromeClient中重写onShowFileChooser方法，如下所示：

mWebView.setWebChromeClient(new WebChromeClient() {
@Override
public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathCallback, FileChooserParams fileChooserParams) {
mFilePathCallback = filePathCallback;
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("*/*");
startActivityForResult(intent, PICKFILE_REQUEST_CODE);
return true;
}
});

然后onActivityResult执行以下操作：

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
if (requestCode == PICKFILE_REQUEST_CODE) {
//Uri result = intent.getData();
Uri result = intent == null || resultCode != RESULT_OK ? null
: intent.getData();
if(result != null){
Uri[] resultsArray = new Uri[1];
resultsArray[0] = result;
mFilePathCallback.onReceiveValue(resultsArray);
}
else
mFilePathCallback.onReceiveValue(null);
}
}

并在活动中为请求代码定义静态 int，例如：

private static final int PICKFILE_REQUEST_CODE = 1;

它应该像魅力一样工作。