Currently, I am still in the proccess of learning Android development so please excuse me if this question of mine is not easily understandable for you.
I create an Android app that is showing a set of list using RecyclerView and when the user click each of the names on the list, it will redirect them to a set of different websites and it will be displayed in WebView. Each of those websites have a different login page. I don't control those websites. Those websites turn off their cookies. Now, is it possible to save user's Username and Password in this situation?
When I included Facebook, Instagram and Twitter, my app able to save the Username and Password (maybe because they are saving cookies?). But if I try the particular websites (with the special situation) that I wanted to add, the Username and Password is not saved.
Since the setSavePassword method is deprecated, I can not found other way to implement saving Username and Password. I have read about SharedPreferences, JavaScript and Autofill several times, but I don't know how to properly implement them into my app. Because from most of what I have read, it is suggested that it will need a login page first to save the Username and Password.
This is my WebView code.
public class WebViewActivity extends AppCompatActivity {
private WebView webView;
String url = "";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.webview);
webView = findViewById(R.id.webView);
WebSettings webSettings = webView.getSettings();
websettings.setDomStorageEnabled(true);
websettings.setJavaScriptEnabled(true);
webView.getSettings().setAppCachePath(getApplicationContext().getFilesDir().getAbsolutePath() + "/cache");
webView.getSettings().setDatabasePath(getApplicationContext().getFilesDir().getAbsolutePath() + "/databases");
if (Build.VERSION.SDK_INT >= 21) {
CookieManager.getInstance().setAcceptThirdPartyCookies(webView, true);
} else {
CookieManager.getInstance().setAcceptCookie(true);
}
webView.loadUrl(url);
webView.setWebViewClient(new WebViewClient(){
@Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
}
}
...
}
...
}
Thank you.
public class WebViewActivity extends AppCompatActivity {
private WebView webView;
String url = "";
class MyJavaScriptInterface {
MyJavaScriptInterface() {
}
@SuppressWarnings("unused")
@JavascriptInterface
public void processContent(String user,String pass) {
Log.e("Remember", "user:"+user+" pass:"+pass);
if (!(user.length() >= 1 && pass.length() >= 1))
return;
SharedPreferences sharedPreferences = getContext().getSharedPreferences("UserInformation",MODE_PRIVATE);
if (sharedPreferences.getBoolean("isClickYes", false)) {
sharedPreferences.edit().putString("us",user).apply();
sharedPreferences.edit().putString("pass",pass).apply();
}
if (!sharedPreferences.getBoolean("isClickYes", false)) {
AlertDialog alertDialog = new AlertDialog.Builder(getContext())
.setTitle("save information")
.setMessage("Are You Want Save Password?")
.setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
sharedPreferences.edit().putString("us",user).apply();
sharedPreferences.edit().putString("pass",pass).apply();
sharedPreferences.edit().putBoolean("isClickYes",true).apply();
}
})
.setNegativeButton(android.R.string.no, null)
.setIcon(android.R.drawable.ic_popup_reminder)
.show();
}
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.webview);
webView = findViewById(R.id.webView);
WebSettings webSettings = webView.getSettings();
websettings.setDomStorageEnabled(true);
websettings.setJavaScriptEnabled(true);
webView.addJavascriptInterface(new MyJavaScriptInterface(), "INTERFACE");
webView.getSettings().setAppCachePath(getApplicationContext().getFilesDir().getAbsolutePath() + "/cache");
webView.getSettings().setDatabasePath(getApplicationContext().getFilesDir().getAbsolutePath() + "/databases");
if (Build.VERSION.SDK_INT >= 21) {
CookieManager.getInstance().setAcceptThirdPartyCookies(webView, true);
} else {
CookieManager.getInstance().setAcceptCookie(true);
}
webView.setWebViewClient(new WebViewClient(){
@Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
}
private void runOnUi(int page, WebView view ,SharedPreferences sharedPreferences) {
int LOGIN = 0;
int LOGIN_PASS = 1;
WebViewActivity.this.runOnUiThread(() -> {
if (page == LOGIN_PASS) {
view.loadUrl("javascript:(function(){l=document.getElementById(\"formLogin\"); l.setAttribute(\"onclick\",\"" +
"INTERFACE.processContent( document.getElementById('txtUserId').value , document.getElementById('txtPassword').value );\" ); " + "})()");
if (sharedPreferences.getBoolean("isClickYes", false)) {
String pass = sharedPreferences.getString("pass", "");
view.loadUrl("javascript:(function(){l=document.getElementById('txtPassword');l.value='" + pass + "'; })()");
}
} else if (page == LOGIN) {
String user = sharedPreferences.getString("us", "");
view.loadUrl("javascript:(function(){l=document.getElementById('txtUserId2');l.value='" + user + "'; })()");
}
});
}
@Nullable
@Override
public WebResourceResponse shouldInterceptRequest(WebView view, WebResourceRequest request) {
if (request.getUrl().toString().equals("https/.../....png")) {
SharedPreferences sharedPreferences = getContext().getSharedPreferences("UserInformation", MODE_PRIVATE);
if (request.getRequestHeaders().toString().contains("Referer=https/...../loginpass"))
runOnUi(1, view, sharedPreferences);
else if (request.getRequestHeaders().toString().contains("Referer=https/...../login"))
runOnUi(0, view, sharedPreferences);
}
return super.shouldInterceptRequest(view, request);
}
}
}
webView.loadUrl(url);
...
}