做Android项目,离不开去服务器取数据,典型的就是Android访问php调取json数据。网上类似的例子一大堆,而且居然代码都一样,我要吐槽一下,你们发的代码不全,这不是坑人吗。
做这个项目,我们要用到Apache提供的依赖包(jar包):①httpclient ②httpcore ③http-mimi ④apache-mime4j
国际惯例:先上DEMO,下载地址:Android访问php调取json数据
我们先熟悉一下 php下的json数据格式
e.g.
$tnnowu = array( 'username' => '灬抹茶灬', 'password' => '666', 'user_id' => 1 ); echo json_encode($tnnowu);
MainActivity.java
package com.cnwuth.getjson; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.util.Log; import org.apache.http.HttpResponse; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpGet; import org.apache.http.impl.client.DefaultHttpClient; import org.json.JSONObject; import java.io.BufferedReader; import java.io.InputStreamReader; public class MainActivity extends AppCompatActivity{ @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); } private void startURLCheck(String username,String password) { HttpClient httpClient = new DefaultHttpClient(); StringBuilder stringBuilder = new StringBuilder(); HttpGet httpGet = new HttpGet("xxx.xxx.php"); try { HttpResponse httpResponse = httpClient.execute(httpGet); BufferedReader bufferedReader = new BufferedReader(new InputStreamReader( httpResponse.getEntity().getContent() )); for (String s = bufferedReader.readLine();s!=null;s=bufferedReader.readLine()) { stringBuilder.append(s); } JSONObject jsonObject = new JSONObject(stringBuilder.toString()); String re_username = jsonObject.getString("username"); String re_password = jsonObject.getString("password"); int re_user_id = jsonObject.getInt("user_id"); setTitle("用户ID_" + re_user_id); Log.v("url response" , "true=" + re_username); Log.v("url response" , "true=" + re_password); } catch (Exception e) { Log.v("url response" , "false"); e.printStackTrace(); } } }
AndroidMainifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.cnwuth.getjson"> <uses-permission android:name="android.permission.INTERNET"></uses-permission> <application android:allowbackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:supportsrtl="true" android:theme="@style/AppTheme"> <activity android:name=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN"></action> <category android:name="android.intent.category.LAUNCHER"></category> </intent-filter> </activity> </application> </manifest>
以上就介绍了Android访问php调取json数据,包括了方面的内容,希望对PHP教程有兴趣的朋友有所帮助。