4

我正在尝试找到一个代码,该代码将在已安装的应用程序的初始启动时弹出一个窗口。就像开始出现在越来越多的应用程序中的变更日志一样。我找到了一些类似的代码,但作为一个初学者,我无法弄清楚将代码准确地放在哪里,而且我总是有很多错误,一旦我尝试修复它们仍然无法工作。我在 Eclipse 中使用 android 项目工作,并且正在使用 webview 来显示网站。

XML:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
   android:orientation="vertical"
    android:layout_width="fill_parent" android:layout_height="fill_parent">



<WebView  xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/webview"
    android:layout_height="fill_parent" android:layout_width="fill_parent" android:scrollbarAlwaysDrawVerticalTrack="false"/>

</LinearLayout>

Java 文件:

package com.A2Ddesigners.WhatThe;

import android.app.Activity;
import android.os.Bundle;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.view.KeyEvent;


public class Whatthe extends Activity {
    WebView webview;
    /** Called when the activity is first created. */
    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if ((keyCode == KeyEvent.KEYCODE_BACK) && webview.canGoBack()) {
            webview.goBack();
            return true;
        }
        return super.onKeyDown(keyCode, event);
    }
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        webview = (WebView) findViewById(R.id.webview);
        webview.setWebViewClient(new HelloWebViewClient());
        webview.getSettings().setJavaScriptEnabled(true);
        webview.setInitialScale(50); 
        webview.getSettings().setUseWideViewPort(true); 
        webview.loadUrl("http://mdsitest2.com/");
    }
    private class HelloWebViewClient extends WebViewClient {
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            view.loadUrl(url);
            return true;


            }

            }   
        }
4

4 回答 4

2

使用我的此代码,您可以在任何类型的活动初始时间视图上显示弹出窗口。

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.PopupWindow;

public class PopupDispaly extends Activity {
    private PopupWindow outComePopup;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_tiwter_login);
        final View anyView = findViewById(R.id.popo_up); // define heade your view
        anyView.postDelayed(new Runnable() {
            @Override
            public void run() {
                callFirstToolTip(anyView);
            }
        }, 5000); // hear you can put your delay time like 5000 mls

    }
    public void callFirstToolTip(View view) {
        Log.i("Started Info","popup");
        View layout = LayoutInflater.from(PopupDispaly.this).inflate(R.layout.popup_copy_delete, null); // define hear your layout file id.
        LinearLayout layCopyDelete = (LinearLayout) layout.findViewById(R.id.layCopyDelete);// hear define your id of sub lay like LinearLayout.
        outComePopup = new PopupWindow(layout);
        outComePopup.setFocusable(true);
        layCopyDelete.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
        outComePopup.setWidth(layCopyDelete.getMeasuredWidth());
        outComePopup.setHeight(layCopyDelete.getMeasuredHeight());
        outComePopup.setBackgroundDrawable(getResources().getDrawable(android.R.color.transparent));
        outComePopup.setOutsideTouchable(true);
        outComePopup.showAsDropDown(view);
    }

}

还有我的客户视图布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:background="@drawable/got_it_bg"
    android:layout_gravity="center_horizontal"
   android:id="@+id/layCopyDelete"
    android:layout_marginLeft="100dp"
    android:orientation="horizontal">

</LinearLayout>
于 2015-05-29T05:39:46.403 回答
0

听起来您应该使用自定义对话框。http://developer.android.com/guide/topics/ui/dialogs.html

页面底部有一个代码示例。要显示它,您可以在主要活动的 onCreate() 方法中调用 onCreateDialog(int)。

于 2011-05-02T22:41:11.177 回答
0

PopupWindow.showAsDropDown()in a delay process可以解决这个问题,可以延迟0.5s执行show popupWindowin方法。onCreate()

于 2011-09-29T08:10:43.433 回答
0

您应该使用PopupWindow.showAtLocation但使用post您活动的视图之一的方法。您还可以使用 Activity 的根视图findViewById(android.R.id.content)。您的代码应如下所示:

View anyView = findViewById(R.id.anyView);
anyView.post(new Runnable()
{
    @Override
    public void run()
    {
        // Create and show PopupWindow
    }
});
于 2013-02-11T15:07:11.140 回答