1 AndroidManifest.xml
<uses-permission android:name="android.permission.INTERNET" />
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.node07">
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/Theme.TEST">
<activity android:name=".PipeActivity"></activity>
<activity android:name=".PipeCountActivity" />
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
2.通过netUtil调用doget或dopost
String (String city) {
String weatherUrl = + + + + + + + + cityLog.(+ weatherUrl)String weatherResult = (weatherUrl)(weatherResult)}com.example.node07.utilandroid.util.Logjava.io.BufferedReaderjava.io.IOExceptionjava.io.InputStreamjava.io.InputStreamReaderjava.io.OutputStreamjava.net.HttpURLConnectionjava.net.URLjava.nio.charset.StandardCharsetsjava.util.HashMapjava.util.Mapjava.util.SetNetUtil {
String = String = String = String (String url) {
HttpURLConnection urlConnection = BufferedReader reader = String bookJSONString = {
URL requestURL = URL(url)urlConnection = (HttpURLConnection) requestURL.openConnection()urlConnection.setRequestMethod()urlConnection.setConnectTimeout()urlConnection.setRequestProperty()urlConnection.connect()InputStream inputStream = urlConnection.getInputStream()reader = BufferedReader(InputStreamReader(inputStreamStandardCharsets.))StringBuilder builder = StringBuilder()String line((line = reader.readLine()) != ) {
builder.append(line)}
(builder.length() == ) {
}
bookJSONString = builder.toString()} (Exception e) {
e.printStackTrace()} {
(urlConnection != ) {
urlConnection.disconnect()}
(reader != ) {
{
reader.close()} (IOException e) {
e.printStackTrace()}
}
}
bookJSONString}
(String urlStr) {
HttpURLConnection urlConnection = OutputStream outputStream = result = {
URL url = URL(urlStr)urlConnection = (HttpURLConnection) url.openConnection()Map<StringString> paramMap = HashMap<>()paramMap.put()paramMap.put()String paramData = (paramMap)urlConnection.setRequestMethod()urlConnection.setConnectTimeout(* )urlConnection.setRequestProperty(String.(paramData.length()))urlConnection.setDoOutput()outputStream = urlConnection.getOutputStream()outputStream.write(paramData.getBytes())code = urlConnection.getResponseCode()(code == ) {
result = }
} (Exception e) {
e.printStackTrace()}{
(urlConnection != ) {
urlConnection.disconnect()}
(outputStream != ) {
{
outputStream.close()} (IOException e) {
e.printStackTrace()}
}
}
result}
String (Map<StringString> paramMap) {
StringBuilder sb = StringBuilder()Set<Map.Entry<StringString>> entries = paramMap.entrySet()(Map.Entry<StringString> entry :
entries) {
sb.append(entry.getKey())
.append()
.append(entry.getValue())
.append()}
sb.deleteCharAt(sb.length() - )sb.toString()}
String (String city) {
String weatherUrl = + + + + + + + + cityLog.(+ weatherUrl)String weatherResult = (weatherUrl)(weatherResult)}
String (String unicodeStr) {
(unicodeStr == ) {
}
StringBuffer retBuf = StringBuffer()maxLoop = unicodeStr.length()(i = i < maxLoopi++) {
(unicodeStr.charAt(i) == ) {
((i < maxLoop - ) && ((unicodeStr.charAt(i + ) == ) || (unicodeStr.charAt(i + ) == )))
{
retBuf.append(() Integer.(unicodeStr.substring(i + i + )))i += } (NumberFormatException localNumberFormatException) {
retBuf.append(unicodeStr.charAt(i))}
retBuf.append(unicodeStr.charAt(i))} {
retBuf.append(unicodeStr.charAt(i))}
}
retBuf.toString()}
}
