Webjs

public class MainActivity extends Activity {

private WebView web;
private Button btn;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn = (Button) findViewById(R.id.usejsmethod);
btn.setOnClickListener(listener);
web = (WebView) findViewById(R.id.webView);
initsetting();
web.loadUrl("file:///android_asset/jstest.html");
web.addJavascriptInterface(new Object() {
// 对好名称
@android.webkit.JavascriptInterface
public void setinfo(String name, String myclass) {
Toast.makeText(MainActivity.this, "名称" + name + "班级" + myclass,
0).show();
}
}, "javaCode");
}
private void initsetting() {
WebSettings settings = web.getSettings();
// 设置支持
settings.setJavaScriptEnabled(true);
}

OnClickListener listener = new OnClickListener() {
// 调用js方法
@Override
public void onClick(View v) {
web.loadUrl("javascript:_onsubmit()");
}
};

}