【移動應(yīng)用開發(fā)技術(shù)】androidWebViewjava與js相互調(diào)用

androidwebViewjs使用1、js調(diào)用java

1、1js代碼

<scripttype="text/javascript">

functioncall(){

window.androidInterface.call('02585818031');

}

</script>

1.2、java代碼

packagecom.example.webview;

importandroid.annotation.SuppressLint;

importandroid.content.Intent;

.Uri;

importandroid.os.Bundle;

importandroid.support.v7.app.ActionBarActivity;

importandroid.view.KeyEvent;

importandroid.view.Menu;

importandroid.view.MenuItem;

importandroid.view.Window;

importandroid.webkit.JavascriptInterface;

importandroid.webkit.WebSettings;

importandroid.webkit.WebView;

importandroid.webkit.WebViewClient;

@SuppressLint("JavascriptInterface")

publicclassMainActivityextendsActionBarActivity{

privateWebViewwebView;

privateintscreenHeight;

privateintscreenWidth;

@Override

protectedvoidonCreate(BundlesavedInstanceState){

super.onCreate(savedInstanceState);

requestWindowFeature(Window.FEATURE_NO_TITLE);//設(shè)置無標(biāo)題

setContentView(R.layout.activity_main);

webView=(WebView)findViewById(R.id.web_view);

WebSettingswebSettings=webView.getSettings();

webSettings.setBuiltInZoomControls(true);

webSettings.setLoadWithOverviewMode(true);

webSettings.setJavaScriptEnabled(true);

webView.setWebViewClient(newMyWebViewClient());

webView.addJavascriptInterface(newMyAndroidInterface(),"androidInterface");

Stringurl="file:///android_asset/tangbangjidian/fuwu.html";

//Stringurl="file:///android_asset/baitian/index.html";

webView.loadUrl(url);

}

classMyAndroidInterface{

publicMyAndroidInterface(){};

@JavascriptInterface//注意：加上這行注解

publicvoidcall(Stringnumber){

//用intent啟動撥打電話

Intentintent=newIntent(Intent.ACTION_CALL,Uri.parse("tel:"+number));

startActivity(intent);

}

}

@Override

publicbooleanonKeyDown(intkeyCode,KeyEventevent){

if((keyCode==KeyEvent.KEYCODE_BACK)&&webView.canGoBack()){

webView.goBack();//goBack()表示返回WebView的上一頁面

returnfalse;

}

returntrue;

}

privateclassMyWebViewClientextendsWebViewClient{

@Override

publicbooleanshouldOverrideUrlLoading(WebViewview,Stringurl){

view.loadUrl(url);//當(dāng)打開新鏈接時，使用當(dāng)前的WebView，不會使用系統(tǒng)其他瀏覽器

returntrue;

}

}

@Override

publicbooleanonCreateOptionsMenu(Menumenu){

getMenuInflater().inflate(R.menu.main,menu);

returntrue;

}

@Override

publicbooleanonOptionsItemSelected(MenuItemitem){

intid=item.getItemId();

if(id==R.id.action_settings){

returntrue;

}

returnsuper.onOptionsItemSelected(item);

}

}2、java調(diào)用js

2.1、java代碼，webView為WebView對象

//無參數(shù)調(diào)用

webView.loadUrl("javascript:javacalljs()");

//傳遞參數(shù)調(diào)用

webView.loadUrl("javascript:javacalljswithargs("+"'helloworld'"+")");

2.2、js代碼

functionjavacalljs(){

document.getElementById("content").innerHTML+=