Java Android bilenler lütfen ...
02.11.2016 - 10:51
Aşağıya MainActivity sayfamı koyuyorum. Sorum şu:
protected void onCreate(Bundle savedInstanceState) içerisine aşağıdaki webviewle başlayan kodları koyduğum zaman uygulama derleniyor ama hata veriyor. Yani webview'le başlayan hiçbirisini kabul etmiyor.
webViewClient = new CustomWebViewClient();//CustomWebViewClient classdan webViewClient objesi oluşturuyoruz
webview.getSettings().setBuiltInZoomControls(true); //zoom yapılmasına izin verir
webview.getSettings().setSupportZoom(true);
webview.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
webview.getSettings().setAllowFileAccess(true);
webview.getSettings().setDomStorageEnabled(true);
webview.getSettings().setJavaScriptEnabled(true);
webview.setWebViewClient(webViewClient); //oluşturduğumuz webViewClient objesini webViewımıza set ediyoruzYUKARDAKİ KODLARI public void onBackPressed() İÇERİSİNE KOYDUĞUMDA ÇALIŞIYOR AMA HALİYLE GERİ GİDİNCE ÇALIŞIYOR :)
SORUN NERDE! KAFAYI SIYIRACAĞIM
MAİNACTİVİTY SAYFAM:
package example.com.materialnavigationdrawer.activities;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.support.design.widget.NavigationView;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Toast;
import com.onesignal.OneSignal;
import butterknife.Bind;
import butterknife.ButterKnife;
import example.com.materialnavigationdrawer.R;
import example.com.materialnavigationdrawer.fragments.ButterknifeFragment;
import example.com.materialnavigationdrawer.fragments.CricinfoFragment;
import example.com.materialnavigationdrawer.fragments.DraftFragment;
import example.com.materialnavigationdrawer.fragments.GoogleFragment;
import example.com.materialnavigationdrawer.fragments.InboxFragment;
import example.com.materialnavigationdrawer.fragments.MaterialDesignGoogleFragment;
import example.com.materialnavigationdrawer.fragments.SentMailFrag;
import example.com.materialnavigationdrawer.fragments.StarredFragment;
/**
* Created by jarvis on 10-Mar-16
* at 11:52 AM .
*/
public class MainActivity extends AppCompatActivity {
//Defining Variables
@Bind(R.id.toolbar)
Toolbar toolbar;
@Bind(R.id.navigation_view)
NavigationView navigationView;
private DrawerLayout drawerLayout;
WebView webview;//webview id ile oluşturuldu
@Override
public void onBackPressed() {
webview = (WebView) findViewById(R.id.googleWebView);
if (webview.canGoBack()) {
webview.goBack();
} else {
AlertDialog.Builder alertDialog = new AlertDialog.Builder(MainActivity.this);
alertDialog.setTitle("KAMU BİLGİ");
alertDialog.setMessage("Çıkmak Istediğinize Emin misiniz?");
alertDialog.setPositiveButton("Evet", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
finish();
}
});
alertDialog.setNegativeButton("Hayır", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
}
});
alertDialog.show();
}
}
private CustomWebViewClient webViewClient;
private String Url = "http://www.xxx.com";
ProgressDialog mProgressDialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mProgressDialog = new ProgressDialog(this);//ProgressDialog objesi oluşturuyoruz
mProgressDialog.setMessage("Yükleniyor...");//ProgressDialog Yükleniyor yazısı
webViewClient = new CustomWebViewClient();//CustomWebViewClient classdan webViewClient objesi oluşturuyoruz
webview.getSettings().setBuiltInZoomControls(true); //zoom yapılmasına izin verir
webview.getSettings().setSupportZoom(true);
webview.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
webview.getSettings().setAllowFileAccess(true);
webview.getSettings().setDomStorageEnabled(true);
webview.getSettings().setJavaScriptEnabled(true);
webview.setWebViewClient(webViewClient); //oluşturduğumuz webViewClient objesini webViewımıza set ediyoruz
OneSignal.startInit(this).init();
ButterKnife.bind(this);
// setting it as the actionbar
setSupportActionBar(toolbar);
FragmentTransaction tx = getSupportFragmentManager().beginTransaction();
tx.replace(R.id.frame, new GoogleFragment());
tx.commit();
//Setting Navigation View Item Selected Listener to handle the item click of the navigation menu
navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
// This method will trigger on item Click of navigation menu
@Override
public boolean onNavigationItemSelected(MenuItem menuItem) {
//Checking if the item is in checked state or not, if not make it in checked state
if (menuItem.isChecked()) menuItem.setChecked(false);
else menuItem.setChecked(true);
//Closing drawer on item click
drawerLayout.closeDrawers();
//Check to see which item was being clicked and perform appropriate action
switch (menuItem.getItemId()) {
//Replacing the main content with ContentFragment Which is our Inbox View;
case R.id.inbox:
InboxFragment contentFragment = new InboxFragment();
FragmentTransaction fragmentTransaction1 = getSupportFragmentManager().beginTransaction();
fragmentTransaction1.replace(R.id.frame, contentFragment);
fragmentTransaction1.commit();
toolbar.setTitle("Gelen Kutusu");
return true;
case R.id.starred:
StarredFragment starredFragment = new StarredFragment();
FragmentTransaction fragmentTransaction2 = getSupportFragmentManager().beginTransaction();
fragmentTransaction2.replace(R.id.frame, starredFragment);
fragmentTransaction2.commit();
toolbar.setTitle("Başlangıç");
return true;
case R.id.sent_mail:
SentMailFrag sentMailFragment = new SentMailFrag();
FragmentTransaction fragmentTransaction3 = getSupportFragmentManager().beginTransaction();
fragmentTransaction3.replace(R.id.frame, sentMailFragment);
fragmentTransaction3.commit();
toolbar.setTitle("Mail Gönder");
return true;
case R.id.drafts:
DraftFragment draftFragment = new DraftFragment();
FragmentTransaction fragmentTransaction4 = getSupportFragmentManager().beginTransaction();
fragmentTransaction4.replace(R.id.frame, draftFragment);
fragmentTransaction4.commit();
toolbar.setTitle("Çöp Kutusu");
return true;
case R.id.google:
GoogleFragment googleFragment = new GoogleFragment();
FragmentTransaction fragmentTransaction5 = getSupportFragmentManager().beginTransaction();
fragmentTransaction5.replace(R.id.frame, googleFragment);
fragmentTransaction5.commit();
toolbar.setTitle("Ana Sayfa");
return true;
case R.id.cricinfo:
CricinfoFragment cricinfoFragment = new CricinfoFragment();
FragmentTransaction fragmentTransaction6 = getSupportFragmentManager().beginTransaction();
fragmentTransaction6.replace(R.id.frame, cricinfoFragment);
fragmentTransaction6.commit();
toolbar.setTitle("Resim Galeri");
return true;
case R.id.butterknife:
ButterknifeFragment butterknifeFragment = new ButterknifeFragment();
FragmentTransaction fragmentTransaction7 = getSupportFragmentManager().beginTransaction();
fragmentTransaction7.replace(R.id.frame, butterknifeFragment);
fragmentTransaction7.commit();
toolbar.setTitle("Video Galeri");
return true;
case R.id.footerItem:
MaterialDesignGoogleFragment materialDesignGoogleFragmentHere = new MaterialDesignGoogleFragment();
FragmentTransaction fragmentTransaction8 = getSupportFragmentManager().beginTransaction();
fragmentTransaction8.replace(R.id.frame, materialDesignGoogleFragmentHere);
fragmentTransaction8.commit();
toolbar.setTitle("Soru - Cevap");
return true;
default:
Toast.makeText(MainActivity.this, "Default case", Toast.LENGTH_LONG).show();
return true;
}
}
});
// Initializing Drawer Layout and ActionBarToggle
drawerLayout = (DrawerLayout) findViewById(R.id.drawer);
ActionBarDrawerToggle actionBarDrawerToggle = new ActionBarDrawerToggle(this, drawerLayout, toolbar, R.string.openDrawer, R.string.closeDrawer) {
@Override
public void onDrawerClosed(View drawerView) {
// Code here will be triggered once the drawer closes as we dont want anything to happen so we leave this blank
super.onDrawerClosed(drawerView);
}
@Override
public void onDrawerOpened(View drawerView) {
// Code here will be triggered once the drawer open as we dont want anything to happen so we leave this blank
super.onDrawerOpened(drawerView);
}
};
//Setting the actionbarToggle to drawer layout
drawerLayout.setDrawerListener(actionBarDrawerToggle);
//calling sync state is necessay or else your hamburger icon wont show up
actionBarDrawerToggle.syncState();
}
private class CustomWebViewClient extends WebViewClient {
//Alttaki methodların hepsini kullanmak zorunda deilsiniz
//Hangisi işinize yarıyorsa onu kullanabilirsiniz.
@Override
public void onPageStarted(WebView view, String url, Bitmap favicon) { //Sayfa yüklenirken çalışır
super.onPageStarted(view, url, favicon);
if(!mProgressDialog.isShowing())//mProgressDialog açık mı kontrol ediliyor
{
mProgressDialog.show();//mProgressDialog açık değilse açılıyor yani gösteriliyor ve yükleniyor yazısı çıkıyor
}
}
@Override
public void onPageFinished(WebView view, String url) {//sayfamız yüklendiğinde çalışıyor.
super.onPageFinished(view, url);
if(mProgressDialog.isShowing()){//mProgressDialog açık mı kontrol
mProgressDialog.dismiss();//mProgressDialog açıksa kapatılıyor
}
}
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
// Bu method açılan sayfa içinden başka linklere tıklandığında açılmasına yarıyor.
//Bu methodu override etmez yada edip içini boş bırakırsanız ilk url den açılan sayfa dışında başka sayfaya geçiş yapamaz
view.loadUrl(url);//yeni tıklanan url i açıyor
return true;
}
@Override
public void onReceivedError(WebView view, int errorCode,String description, String failingUrl) {
//BU method webview yüklenirken herhangi bir hatayla karşilaşilırsa hata kodu dönüyor.
//Dönen hata koduna göre kullanıcıyı bilgilendirebilir yada gerekli işlemleri yapabilirsiniz
//errorCode ile hatayı alabilirsiniz
// if(errorCode==-8){
// Timeout
// } şeklinde kullanabilirsiniz
//Hata Kodları aşağıdadır...
/*
* /** Generic error
public static final int ERROR_UNKNOWN = -1;
/** Server or proxy hostname lookup failed
public static final int ERROR_HOST_LOOKUP = -2;
/** Unsupported authentication scheme (not basic or digest)
public static final int ERROR_UNSUPPORTED_AUTH_SCHEME = -3;
/** User authentication failed on server
public static final int ERROR_AUTHENTICATION = -4;
/** User authentication failed on proxy
public static final int ERROR_PROXY_AUTHENTICATION = -5;
/** Failed to connect to the server
public static final int ERROR_CONNECT = -6;
/** Failed to read or write to the server
public static final int ERROR_IO = -7;
/** Connection timed out
public static final int ERROR_TIMEOUT = -8;
/** Too many redirects
public static final int ERROR_REDIRECT_LOOP = -9;
/** Unsupported URI scheme
public static final int ERROR_UNSUPPORTED_SCHEME = -10;
/** Failed to perform SSL handshake
public static final int ERROR_FAILED_SSL_HANDSHAKE = -11;
/** Malformed URL
public static final int ERROR_BAD_URL = -12;
/** Generic file error
public static final int ERROR_FILE = -13;
/** File not found
public static final int ERROR_FILE_NOT_FOUND = -14;
/** Too many requests during this load
public static final int ERROR_TOO_MANY_REQUESTS = -15;
*/
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
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