Having problem with download from a site with AsyncTask

Question

I saw a tutorial video from android tutorial series . In this video the guy write a new class extend of "AsyncTask" class and then he downloaded page source from a website . I write that code but it didn't work !! I try http and https connection and website but still didn't work

public class MainActivity extends AppCompatActivity {



@Override
protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    DownloadTask task = new DownloadTask();
    String result = null;

    try {
        result = task.execute("https://www.google.com").get();
        Log.i("result",result);
    }
    catch (Exception e){

        Log.i("Error " , "in main activity");
    }


}

public void clickedFunc(View view){


}

public class DownloadTask extends AsyncTask<String , Void , String>{


    @Override
    protected String doInBackground(String... strings) {

        String result = "" ;
        URL url ;
        HttpsURLConnection httpsURLConnection = null ;

        try{

            url = new URL(strings[0]);
            httpsURLConnection = (HttpsURLConnection)url.openConnection();
            InputStream inputStream =  httpsURLConnection.getInputStream();
            InputStreamReader inputStreamReader = new InputStreamReader(inputStream);
            int data = inputStreamReader.read();

            while (data != -1){

                char current = (char) data ;
                result += current ;
                data = inputStream.read();
            }
            return result ;

        }catch (Exception e){

            Log.i("Error " , "in async class");
        }

        return null;
    }
}

}

The main logs is :

W/art: Failed execv

I/Choreographer: Skipped 112 frames!  The application may be doing too much work on its main thread.
.
.
.
All my logs : 

W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg  --debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/com.sadghostgame.myproject2-2/split_lib_dependencies_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@com.sadghostgame.myproject2-2@split_lib_dependencies_apk.apk@classes.dex) because non-0 exit status
W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg  --debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/com.sadghostgame.myproject2-2/split_lib_slice_0_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@com.sadghostgame.myproject2-2@split_lib_slice_0_apk.apk@classes.dex) because non-0 exit status
W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg  --debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/com.sadghostgame.myproject2-2/split_lib_slice_1_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@com.sadghostgame.myproject2-2@split_lib_slice_1_apk.apk@classes.dex) because non-0 exit status
W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg  --debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/com.sadghostgame.myproject2-2/split_lib_slice_2_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@com.sadghostgame.myproject2-2@split_lib_slice_2_apk.apk@classes.dex) because non-0 exit status
W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg  --debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/com.sadghostgame.myproject2-2/split_lib_slice_3_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@com.sadghostgame.myproject2-2@split_lib_slice_3_apk.apk@classes.dex) because non-0 exit status
W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg  --debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/com.sadghostgame.myproject2-2/split_lib_slice_4_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@com.sadghostgame.myproject2-2@split_lib_slice_4_apk.apk@classes.dex) because non-0 exit status
W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg  --debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/com.sadghostgame.myproject2-2/split_lib_slice_5_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@com.sadghostgame.myproject2-2@split_lib_slice_5_apk.apk@classes.dex) because non-0 exit status
W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg  --debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/com.sadghostgame.myproject2-2/split_lib_slice_6_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@com.sadghostgame.myproject2-2@split_lib_slice_6_apk.apk@classes.dex) because non-0 exit status
W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg  --debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/com.sadghostgame.myproject2-2/split_lib_slice_7_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@com.sadghostgame.myproject2-2@split_lib_slice_7_apk.apk@classes.dex) because non-0 exit status
W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg  --debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/com.sadghostgame.myproject2-2/split_lib_slice_8_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@com.sadghostgame.myproject2-2@split_lib_slice_8_apk.apk@classes.dex) because non-0 exit status
W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg  --debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/com.sadghostgame.myproject2-2/split_lib_slice_9_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@com.sadghostgame.myproject2-2@split_lib_slice_9_apk.apk@classes.dex) because non-0 exit status
W/System: ClassLoader referenced unknown path: /data/app/com.sadghostgame.myproject2-2/lib/x86
I/InstantRun: starting instant run server: is main process
W/art: Before Android 4.1, method android.graphics.PorterDuffColorFilter android.support.graphics.drawable.VectorDrawableCompat.updateTintFilter(android.graphics.PorterDuffColorFilter, android.content.res.ColorStateList, android.graphics.PorterDuff$Mode) would have incorrectly overridden the package-private method in android.graphics.drawable.Drawable
I/art: Background sticky concurrent mark sweep GC freed 1906(11MB) AllocSpace objects, 476(7MB) LOS objects, 54% free, 3MB/7MB, paused 1.567ms total 101.035ms
I/art: Background partial concurrent mark sweep GC freed 985(5MB) AllocSpace objects, 245(4MB) LOS objects, 39% free, 5MB/8MB, paused 1.391ms total 113.434ms
I/art: Background partial concurrent mark sweep GC freed 304(11KB) AllocSpace objects, 451(7MB) LOS objects, 39% free, 2MB/3MB, paused 894us total 123.406ms
I/art: Background partial concurrent mark sweep GC freed 187(7KB) AllocSpace objects, 276(5MB) LOS objects, 39% free, 3MB/5MB, paused 1.510ms total 106.619ms
I/art: Background partial concurrent mark sweep GC freed 262(10KB) AllocSpace objects, 387(7MB) LOS objects, 39% free, 4MB/7MB, paused 849us total 179.700ms
I/art: Background partial concurrent mark sweep GC freed 335(13KB) AllocSpace objects, 498(9MB) LOS objects, 39% free, 4MB/7MB, paused 986us total 153.366ms
I/art: Background partial concurrent mark sweep GC freed 220(8KB) AllocSpace objects, 320(5MB) LOS objects, 40% free, 4MB/7MB, paused 885us total 145.691ms
I/art: Background sticky concurrent mark sweep GC freed 333(13KB) AllocSpace objects, 495(10MB) LOS objects, 64% free, 2MB/6MB, paused 917us total 112.418ms
I/art: Background partial concurrent mark sweep GC freed 124(4KB) AllocSpace objects, 181(4MB) LOS objects, 39% free, 5MB/9MB, paused 870us total 110.436ms
I/art: Background partial concurrent mark sweep GC freed 268(10KB) AllocSpace objects, 394(8MB) LOS objects, 40% free, 4MB/7MB, paused 846us total 194.871ms
I/art: Background partial concurrent mark sweep GC freed 245(9KB) AllocSpace objects, 359(7MB) LOS objects, 39% free, 3MB/5MB, paused 872us total 135.049ms
I/art: Background partial concurrent mark sweep GC freed 209(8KB) AllocSpace objects, 310(7MB) LOS objects, 39% free, 4MB/7MB, paused 964us total 116.422ms
I/art: Background partial concurrent mark sweep GC freed 125(4KB) AllocSpace objects, 184(29MB) LOS objects, 39% free, 5MB/8MB, paused 1.642ms total 100.880ms
I/art: Background partial concurrent mark sweep GC freed 34(1312B) AllocSpace objects, 43(7MB) LOS objects, 40% free, 4MB/8MB, paused 7.004ms total 121.774ms
I/art: Background partial concurrent mark sweep GC freed 36(1360B) AllocSpace objects, 50(8MB) LOS objects, 39% free, 2MB/3MB, paused 6.189ms total 64.339ms
I/art: Background partial concurrent mark sweep GC freed 22(784B) AllocSpace objects, 31(5MB) LOS objects, 40% free, 2MB/4MB, paused 7.244ms total 39.136ms
I/art: Background partial concurrent mark sweep GC freed 82(3KB) AllocSpace objects, 114(20MB) LOS objects, 39% free, 4MB/8MB, paused 896us total 136.579ms
I/art: Background partial concurrent mark sweep GC freed 81(3KB) AllocSpace objects, 114(28MB) LOS objects, 39% free, 5MB/9MB, paused 881us total 117.422ms
I/result: <||google.kEI};google.getLEI=function(a){for(var b=null;a&&(!a.getAttribute||!(b=a.getAttribute("leid")));)a=a.parentNode;return b};google.https=function(){return"https:"==window.location.protocol};google.ml=function(){return null};google.log=function(a,b,e,c,g){if(a=google.logUrl(a,b,e,c,g)){b=new Image;var d=google.lc,f=google.li;d[f]=b;b.onerror=b.onload=b.onabort=function(){delete d[f]};google.vel&&google.vel.lu&&google.vel.lu(a);b.src=a;google.li=f+1}};google.logUrl=function(a,b,e,c,g){var d="",f=google.ls||"";e||-1!=b.search("&ei=")||(d="&ei="+google.getEI(c),-1==b.search("&lei=")&&(c=google.getLEI(c))&&(d+="&lei="+c));c="";!e&&google.cshid&&-1==b.search("&cshid=")&&"slh"!=a&&(c="&cshid="+google.cshid);a=e||"/"+(g||"gen_204")+"?atyp=i&ct="+a+"&cad="+b+d+f+"&zx="+google.time()+c;/^http:/i.test(a)&&google.https()&&(google.ml(Error("a"),!1,{src:a,glmm:1}),a="");return a};}).call(this);(function(){google.y={};google.x=function(a,b){if(a)var c=a.id;else{do c=Math.random();while(google.y[c])}google.y[c]=[a,b];return!1};google.lm=[];google.plm=function(a){google.lm.push.apply(google.lm,a)};google.lq=[];google.load=function(a,b,c){google.lq.push([[a],b,c])};google.loadAll=function(a,b){google.lq.push([a,b])};}).call(this);google.f={};(function(){google.hs={h:true};})();(function(){google.c={c:{a:true,m:false,n:false,p:false,wi:true}};google.sn='webhp';(function(){var e=function(a,b,c){a.addEventListener?a.addEventListener(b,c,!1):a.attachEvent&&a.attachEvent("on"+b,c)};google.tick=function(a,b,c){google.timers[a]||google.startTick(a);c=void 0!==c?c:google.time();b instanceof Array||(b=[b]);for(var d=0;d<b.length;++d)google.timers[a].t[b[d].clearcut]={key:b[d],ts:c}};google.c.e=function(a,b,c){google.timers[a].e[b]=c};google.c.b=function(a){var b=google.timers.load.m;b[a]&&google.ml(Error("a"),!1,{m:a});b[a]=!0};google.c.u=function(a){var b=google.timers.load.m;if(b[a]){b[a]=!1;for(a in b)if(b[a])return;google.csiReport()}else google.ml(Error("b"),!1,{m:a})};google.rll=function(a,b,c){var d=function(b){c(b);b=d;a.addEventListener?a.removeEventListener("load",b,!1):a.attachEvent&&a.detachEvent("onload",b);b=d;a.addEventListener?a.removeEventListener("error",b,!1):a.attachEvent&&a.detachEvent("onerror",b)};e(a,"load",d);b&&e(a,"error",d)};google.afte=!0;google.aft=function(a){google.c.c.a&&google.afte&&(google.timers.aft||google.startTick("aft"),google.timers.aft.t[a.id||a.src||a.name]=google.time())};google.c.b("pr");google.c.b("xe");}).call(this);})();(function(){var b={gen204:"dcl",clearcut:4};var c=[function(){google.c&&google.tick("load",b)}];google.dclc=function(a){c.length?c.push(a):a()};function d(){for(var a;a=c.shift();)a()}window.addEventListener?(document.addEventListener("DOMContentLoaded",d,!1),window.addEventListener("load",d,!1)):window.attachEvent&&window.attachEvent("onload",d);}).call(this);(function(){var b=[];google.jsc={xx:b,x:function(a){b.push(a)},mm:[],m:function(a){google.jsc.mm=a},aa:[],a:function(a){google.jsc.aa.push(a)},dd:[],d:function(a){google.jsc.dd.push(a)}};}).call(this);(function(){var g=this,h=Date.now||function(){return+new Date};var y={};var A=function(a,d){return function(b){b||(b=window.event);return d.call(a,b)}},B="undefined"!=typeof navigator&&/Macintosh/.test(navigator.userAgent),C=function(){this._mouseEventsPrevented=!0};var E=function(){this.v=[];this.g=[];this.h=[];this.s={};this.i=null;this.l=[];D(this,"_custom")},G="undefined"!=typeof navigator&&/iPhone|iPad|iPod/.test(navigator.userAgent),H=String.prototype.trim?function(a){return a.trim()}:function(a){return a.replace(/^\s+/,"").replace(/\s+$/,"")},I=/\s*;\s*/,M=function(a,d){return function(b){var c=d;if("_custom"==c){c=b.detail;if(!c||!c._type)return;c=c._type}var e;var f;"click"==c&&(B&&b.metaKey||!B&&b.ctrlKey||2==b.which||null==b.which&&4==b.button||b.shiftKey)&&
          (c="clickmod");var x=b.srcElement||b.target,q=J(c,b,x,"",null);for(f=x;f&&f!=this;f=f.__owner||f.parentNode){var k=e=f;var F=c,l=k.__jsaction;if(!l){var r=K(k,"jsaction");if(r){l=y[r];if(!l){l={};for(var v=r.split(I),w=0,u=v?v.len
D/OpenGLRenderer: Use EGL_SWAP_BEHAVIOR_PRESERVED: true
D/: HostConnection::get() New Host Connection established 0xa963f180, tid 13336
D/android.widget.GridLayout: vertical constraints: y5-y0>=1944, y5-y4<=168, y4-y3<=168, y3-y2<=168, y2-y1<=238, y1-y0<=1008 are inconsistent; permanently removing: y5-y4<=168. 
D/: HostConnection::get() New Host Connection established 0xa963f480, tid 13427
I/OpenGLRenderer: Initialized EGL, version 1.4
W/OpenGLRenderer: Failed to choose config with EGL_SWAP_BEHAVIOR_PRESERVED, retrying without...
D/EGL_emulation: eglCreateContext: 0xadd15080: maj 3 min 1 rcv 4
D/EGL_emulation: eglMakeCurrent: 0xadd15080: ver 3 1 (tinfo 0xaddbf730)
E/eglCodecCommon: glUtilsParamSize: unknow param 0x000082da
                  glUtilsParamSize: unknow param 0x00008cdf
E/eglCodecCommon: glUtilsParamSize: unknow param 0x00008824
D/EGL_emulation: eglMakeCurrent: 0xadd15080: ver 3 1 (tinfo 0xaddbf730)
W/art: Before Android 4.1, method int android.support.v7.widget.DropDownListView.lookForSelectablePosition(int, boolean) would have incorrectly overridden the package-private method in android.widget.ListView
I/Choreographer: Skipped 112 frames!  The application may be doing too much work on its main thread.

Answer 1

You can't call method get() on UI Thread. In your doInBackground method instead of returning null return your result. Also override onPostExecute method in your AsyncTask where you should handle your result.

Answer 2

That's work! just see your log :

I/result: <||google.kEI};google.getLEI=function(a){for(var b=null;a&&(!a.getAttribute||!(b=a.getAttribute("leid")));)a=a.parentNode;return b};google.https=function(){return"https:"==window.location.protocol};google.ml=function(){return null};google.log=function(a,b,e,c,g){if(a=google.logUrl(a,b,e,c,g)){b=new Image;var d=google.lc,f=google.li;d[f]=b;b.onerror=b.onload=b.onabort=function(){delete d[f]};google.vel&&google.vel.lu&&google.vel.lu(a);b.src=a;google.li=f+1}};google.logUrl=function(a,b,e,c,g){var d="",f=google.ls||"";e||-1!=b.search("&ei=")||(d="&ei="+google.getEI(c),-1==b.search("&lei=")&&(c=google.getLEI(c))&&(d+="&lei="+c));c="";!e&&google.cshid&&-1==b.search("&cshid=")&&"slh"!=a&&(c="&cshid="+google.cshid);a=e||"/"+(g||"gen_204")+"?atyp=i&ct="+a+"&cad="+b+d+f+"&zx="+google.time()+c;/^http:/i.test(a)&&google.https()&&(google.ml(Error("a"),!1,{src:a,glmm:1}),a="");return a};}).call(this);(function(){google.y={};google.x=function(a,b){if(a)var c=a.id;else{do c=Math.random();while(google.y[c])}google.y[c]=[a,b];return!1};google.lm=[];google.plm=function(a){google.lm.push.apply(google.lm,a)};google.lq=[];google.load=function(a,b,c){google.lq.push([[a],b,c])};google.loadAll=function(a,b){google.lq.push([a,b])};}).call(this);google.f={};(function(){google.hs={h:true};})();(function(){google.c={c:{a:true,m:false,n:false,p:false,wi:true}};google.sn='webhp';(function(){var e=function(a,b,c){a.addEventListener?a.addEventListener(b,c,!1):a.attachEvent&&a.attachEvent("on"+b,c)};google.tick=function(a,b,c){google.timers[a]||google.startTick(a);c=void 0!==c?c:google.time();b instanceof Array||(b=[b]);for(var d=0;d<b.length;++d)google.timers[a].t[b[d].clearcut]={key:b[d],ts:c}};google.c.e=function(a,b,c){google.timers[a].e[b]=c};google.c.b=function(a){var b=google.timers.load.m;b[a]&&google.ml(Error("a"),!1,{m:a});b[a]=!0};google.c.u=function(a){var b=google.timers.load.m;if(b[a]){b[a]=!1;for(a in b)if(b[a])return;google.csiReport()}else google.ml(Error("b"),!1,{m:a})};google.rll=function(a,b,c){var d=function(b){c(b);b=d;a.addEventListener?a.removeEventListener("load",b,!1):a.attachEvent&&a.detachEvent("onload",b);b=d;a.addEventListener?a.removeEventListener("error",b,!1):a.attachEvent&&a.detachEvent("onerror",b)};e(a,"load",d);b&&e(a,"error",d)};google.afte=!0;google.aft=function(a){google.c.c.a&&google.afte&&(google.timers.aft||google.startTick("aft"),google.timers.aft.t[a.id||a.src||a.name]=google.time())};google.c.b("pr");google.c.b("xe");}).call(this);})();(function(){var b={gen204:"dcl",clearcut:4};var c=[function(){google.c&&google.tick("load",b)}];google.dclc=function(a){c.length?c.push(a):a()};function d(){for(var a;a=c.shift();)a()}window.addEventListener?(document.addEventListener("DOMContentLoaded",d,!1),window.addEventListener("load",d,!1)):window.attachEvent&&window.attachEvent("onload",d);}).call(this);(function(){var b=[];google.jsc={xx:b,x:function(a){b.push(a)},mm:[],m:function(a){google.jsc.mm=a},aa:[],a:function(a){google.jsc.aa.push(a)},dd:[],d:function(a){google.jsc.dd.push(a)}};}).call(this);(function(){var g=this,h=Date.now||function(){return+new Date};var y={};var A=function(a,d){return function(b){b||(b=window.event);return d.call(a,b)}},B="undefined"!=typeof navigator&&/Macintosh/.test(navigator.userAgent),C=function(){this._mouseEventsPrevented=!0};var E=function(){this.v=[];this.g=[];this.h=[];this.s={};this.i=null;this.l=[];D(this,"_custom")},G="undefined"!=typeof navigator&&/iPhone|iPad|iPod/.test(navigator.userAgent),H=String.prototype.trim?function(a){return a.trim()}:function(a){return a.replace(/^\s+/,"").replace(/\s+$/,"")},I=/\s*;\s*/,M=function(a,d){return function(b){var c=d;if("_custom"==c){c=b.detail;if(!c||!c._type)return;c=c._type}var e;var f;"click"==c&&(B&&b.metaKey||!B&&b.ctrlKey||2==b.which||null==b.which&&4==b.button||b.shiftKey)&&

this is content of google.com page.