MarketActivity

package com.play.androidvn;

import android.app.ProgressDialog;
import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.os.Handler;
import android.support.v7.app.ActionBarActivity;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Button;

public class MarketActivity extends ActionBarActivity implements OnClickListener {

    private int iView = 0;
    private WebView webview;
    //http://play.android.vn/?color=87989
    private static String link = "http://play.android.vn";
    private static String link2 = "http://play.android.vn/?color=87989";
    private ProgressDialog dialog;
    int i=0;

    Button btThulai;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
//      this.requestWindowFeature(Window.FEATURE_NO_TITLE);
        if (!Funs.isNetworkAvailable(this)){
            setContentView(R.layout.loimang);
            btThulai = (Button) findViewById(R.id.btThulai);
            btThulai.setOnClickListener(this);
        } else {
            setContentView(R.layout.activity_market);

            webview = (WebView) findViewById(R.id.wvNews);
            webview.getSettings().setSupportZoom(true);
            webview.setInitialScale(1);
            webview.getSettings().setLoadWithOverviewMode(true);
            webview.getSettings().setUseWideViewPort(true);
            webview.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
            webview.setScrollbarFadingEnabled(true);
            webview.getSettings().setJavaScriptCanOpenWindowsAutomatically(false);
            webview.getSettings().setJavaScriptEnabled(true);
            webview.loadUrl(link2);
            webview.setWebViewClient(new MaoWebViewClient());

        }
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        try {
            if ((keyCode == KeyEvent.KEYCODE_BACK) && webview.canGoBack()) {
                webview.goBack();
                return true;
            }
            return super.onKeyDown(keyCode, event);

        } catch (Exception e) {
        }
        return true;
    }


    class MaoWebViewClient extends WebViewClient {

        @Override
        public void onPageStarted(WebView view, String url, Bitmap favicon) {
            super.onPageStarted(view, url, favicon);
            if (iView == 0) {
                dialog = new ProgressDialog(MarketActivity.this);
                dialog.setMessage("Please wait...");
                dialog.setCancelable(true);
                dialog.show();
                iView = 1;
            }
            new Handler().postDelayed(new Runnable() {
                @Override
                public void run() {
                    if (dialog != null) {
                        dialog.dismiss();
                    }
                }
            }, 3000);
        }

        @Override
        public void onPageFinished(WebView view, String url) {
            super.onPageFinished(view, url);
            if (dialog != null) {
                dialog.dismiss();
            }
        }

    }

    public boolean onCreateOptionsMenu(Menu menu) {
//      getMenuInflater().inflate(R.menu.main, menu);
        getSupportActionBar().setDisplayShowHomeEnabled(true);
        getSupportActionBar().setHomeButtonEnabled(true);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int itemId = item.getItemId();
        if (itemId == android.R.id.home) {
//          Intent intent = new Intent(this, MainActivity.class);
//          startActivity(intent);
            finish();
        }
        return super.onOptionsItemSelected(item);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
        case R.id.btThulai:
            Intent intent = new Intent(MarketActivity.this,
                    MarketActivity.class);
            startActivity(intent);
            finish();
            break;
        default:
            break;
        }
    }


}