我正面临一个小问题,需要帮助.
我不得不在笔记本电脑上重新安装Windows.之后我安装了Java,提取了Eclipse并设置了环境变量,即Path到Java bin目录,还创建了一个JAVA_HOME变量并进行设置.每次我尝试打开eclipse.exe时都会出现以下错误.
eclipse可执行程序启动程序无法找到其伴侣启动程序jar.
我在这里错过了什么？
public Button stb;
static int cnt=0;
public ArrayList<RadioButton> Butgrp1 = new ArrayList<RadioButton>();
Timer myt;
TimerTask t;
stb.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
myt.mschedule(new TimerTask() {
@Override
public void run() {
// TODO Auto-generated method stub
System.out.println("Entering run");
Handler h=new Handler();
h.post(new Runnable() {
public void run() {
// TODO Auto-generated method stub
runOnUiThread(new Runnable() {
public void run() {
// TODO Auto-generated method stub
Butgrp1.get(cnt).setChecked(true);
cnt=cnt+1;
if(cnt>4)
cnt=0;
if(cnt>0)
// Butgrp1.get(cnt-1).setChecked(false);
System.out.println(cnt);
}
});
}
});
//rg.getChildAt(cnt).setPressed(true);
} …我试图在我的应用程序中使用地图,我收到此错误,无法在当前主题中找到样式'mapViewStyle'
我已正确生成密钥,并已尝试在其他地方为同一问题提供的所有解决方案.
1.my target api and the one mentioned in the manifest file are the same.
2.There is no import.R in my project
3.I have cleaned my project.
4.Uses-library element is a child of the application.
这是我的xml文件
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<com.google.android.maps.MapView
android:id="@+id/mapview1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clickable="true"
android:apiKey="*****************"
android:enabled="true"
/>
</LinearLayout>
这是我对应的java文件
package com.epidemicator.prototype;
import android.os.Bundle;
import com.google.android.maps.MapActivity;
public class Mapacti extends MapActivity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.mapview);
}
@Override
protected boolean isRouteDisplayed() {
// TODO …我需要从我的Android设备发送一个http post请求到我的localhost:8080上运行的web服务器,并由google app引擎托管.
目前的代码是这样的:
try {
HttpPost httppost = new HttpPost("http://192.168.2.220:8080");
httppost.setHeader("Content-type", "application/json");
ResponseHandler <String> responseHandler = new BasicResponseHandler();
StringEntity se = new StringEntity(object.toString());
se.setContentEncoding(newBasicHeader(HTTP.CONTENT_TYPE,"application/json"));
httppost.setEntity(se);
System.out.println("Request Sent");
String response = httpclient.execute(httppost, responseHandler);
String temp = EntityUtils.toString(response.getEntity());
} catch (ClientProtocolException e) {}
catch (IOException e) {
}
}
我也尝试过设置:
HttpPost httppost = new HttpPost("http://10.0.2.2:8080");
在所有情况下,响应为空并且程序强制关闭.我正确地发送请求了吗？有人可以在这里指导我吗？
谢谢
我需要知道如何为网格元素设置ChildrenRect的高度和宽度？
Grid {
id: grid1
anchors.fill: parent
rows: 10
columns: 10
childrenRect.height: background.height/10
childrenRect.width: background.width/10
}
它说它是一个只读元素,当我尝试这样做时无法改变.