私はAndroidアプリを開発しています。基本的にはWebView、progressBar です。Facebook のモバイル サイト (m.facebook.com) が に読み込まれますWebView。
[ファイルを選択] ボタンをクリックして画像をアップロードしても、何も起こりません。私はすべてのソリューションを試しましたが、どれも機能しません。4.0.3 を実行している Galaxy Note (GT-N7000) でテストしています。私の最小 SDK バージョンはバージョン 8 です。
(出典: istyla.com )
詳細については、ここに私のコードがあります...
public class IStyla extends Activity {
private ValueCallback<Uri> mUploadMessage;
private final static int FILECHOOSER_RESULTCODE = 1;
@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;
}
}
private class MyWebChromeClient extends WebChromeClient {
public void openFileChooser(ValueCallback<Uri> uploadMsg) {
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("image/*");
IStyla.this.startActivityForResult(Intent.createChooser(i, "Image Browser"), FILECHOOSER_RESULTCODE);
}
@Override
public boolean onJsAlert(WebView view, String url, String message,final JsResult result) {
//handle Alert event, here we are showing AlertDialog
new AlertDialog.Builder(IStyla.this)
.setTitle("JavaScript Alert !")
.setMessage(message)
.setPositiveButton(android.R.string.ok,
new AlertDialog.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// do your stuff
result.confirm();
}
}).setCancelable(false).create().show();
return true;
}
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_istyla);
WebView webView = (WebView) findViewById(R.id.webView1);
WebSettings webSettings = webView.getSettings();
webSettings.setJavaScriptEnabled(true);
webView.setWebChromeClient(new MyWebChromeClient(){
public void onProgressChanged(WebView view, int progress) {
// Activities and WebViews measure progress with different scales.
// The progress meter will automatically disappear when we reach 100%
ProgressBar progressBar = (ProgressBar) findViewById(R.id.progressBar1);
if(progress < 100 && progressBar.getVisibility() == ProgressBar.GONE){
progressBar.setVisibility(ProgressBar.VISIBLE);
}
progressBar.setProgress(progress);
if(progress == 100) {
progressBar.setVisibility(ProgressBar.GONE);
}
}
public void openFileChooser(ValueCallback<Uri> uploadMsg) {
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("image/*");
IStyla.this.startActivityForResult(Intent.createChooser(i, "Image Browser"), FILECHOOSER_RESULTCODE);
}
});
webView.setWebViewClient(new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
ProgressBar progressBar = (ProgressBar) findViewById(R.id.progressBar1);
progressBar.setVisibility(ProgressBar.VISIBLE);
return true;
}
});
webView.loadUrl("https://m.facebook.com");
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK){
if(((WebView)findViewById(R.id.webView1)).canGoBack()){
((WebView)findViewById(R.id.webView1)).goBack();
return true;
}
}
return super.onKeyDown(keyCode, event);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_istyla, menu);
return true;
}
}
ありがとう