編輯:關於Android編程
package com.example.utils; import java.io.ByteArrayOutputStream; import java.io.InputStream; public class StreamTool { public static byte[] readInputStream(InputStream inStream) throws Exception { ByteArrayOutputStream outStream = new ByteArrayOutputStream();// 輸出流,寫到內存 byte[] buffer = new byte[1024];// 1K緩沖區容量 int len = 0; while ((len = inStream.read(buffer)) != -1) { outStream.write(buffer, 0, len);// 從數組buffer中讀取從0到len的數據 } inStream.close(); return outStream.toByteArray(); } }
package com.example.web; import java.net.HttpURLConnection; import java.net.URL; import java.util.Map; public class HttpRequest { public static void sendGetRequest(String path, Mapparams) throws Throwable { StringBuilder str = new StringBuilder(); str.append('?'); for (Map.Entry entry : params.entrySet()) { str.append(entry.getKey()).append('=').append(entry.getValue()) .append('&'); } str.deleteCharAt(str.length() - 1); URL url = new URL(path); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod("GET"); conn.setConnectTimeout(5 * 1000); } }
package com.example.web; import java.util.HashMap; import java.util.Map; import android.app.Activity; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.Toast; import com.example.image.R; import com.example.web.HttpRequest; public class MainActivity extends Activity { private static final String TAG = "UploaddataToWen"; private EditText titleText; private EditText timelengthText; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_image); Button button = (Button) this.findViewById(R.id.button); titleText = (EditText) this.findViewById(R.id.title); timelengthText = (EditText) this.findViewById(R.id.timelength); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { String title = titleText.getText().toString(); String timelength = timelengthText.getText().toString(); Mapparams = new HashMap (); params.put("method", "save"); params.put("title", title); params.put("timelength", timelength); try { HttpRequest.sendGetRequest( "http://192.168.1.101:8080/web/admin.do", params); Toast.makeText(MainActivity.this, "save success", Toast.LENGTH_LONG).show(); } catch (Throwable e) { Toast.makeText(MainActivity.this, "save fail", Toast.LENGTH_LONG).show(); Log.e(TAG, e.toString()); } } }); } } // //
/* package org.android.net; import java.io.ByteArrayOutputStream; import java.io.InputStream; import java.net.HttpURLConnection; import java.net.URL; public class HtmlRequest { public static void main(String[] args) throws Throwable { URL url = new URL("http://www.baidu.con"); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod("GET"); conn.setConnectTimeout(5 * 1000); InputStream inStream = conn.getInputStream();// 通過輸入流獲取html數據 byte[] data = readInputStream(inStream);// 得到的html的二進制數據 String html= new String(data); System.out.print(html); } public static byte[] readInputStream(InputStream inStream) throws Exception { ByteArrayOutputStream outStream = new ByteArrayOutputStream();// 輸出流,寫到內存 byte[] buffer = new byte[1024];// 1K緩沖區容量 int len = 0; while ((len = inStream.read(buffer)) != -1) { outStream.write(buffer, 0, len);// 從數組buffer中讀取從0到len的數據 } inStream.close(); return outStream.toByteArray(); } } package org.android.net; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileOutputStream; import java.io.InputStream; import java.net.HttpURLConnection; import java.net.URL; public class ImageRequest { public static void main(String[] args) throws Throwable { URL url = new URL("http://imageaddress"); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod("GET"); conn.setConnectTimeout(5 * 1000); InputStream inStream = conn.getInputStream();// 通過輸入流獲取圖片數據 byte[] data = readInputStream(inStream);// 得到的圖片的二進制數據 File imageFile = new File("temp.jpg"); FileOutputStream outStream = new FileOutputStream(imageFile);// 把圖片寫入到硬盤 outStream.write(data); outStream.close(); } public static byte[] readInputStream(InputStream inStream) throws Exception { ByteArrayOutputStream outStream = new ByteArrayOutputStream();// 輸出流,寫到內存 byte[] buffer = new byte[1024];// 1K緩沖區容量 int len = 0; while ((len = inStream.read(buffer)) != -1) { outStream.write(buffer, 0, len);// 從數組buffer中讀取從0到len的數據 } inStream.close(); return outStream.toByteArray(); } } */
Galaxy S7 俨然已經成為目前最受關注的智能手機之一,許多人還將其稱作是目前最佳的智能手機。三星在這部手機身上帶回了對於 microSD 卡的支持,但
為了第六篇的完整性,這裡先貼出原文,下次再來翻譯;:p 原文地址:http://developer.android.com/training/basics/acti
由於Android項目開源所致,市面上出現了N多安卓軟件市場。為了讓我們開發的軟件有更多的用戶使用,我們需要向N多市場發布,軟件升級後,我們也必須到安卓市場上進行更新,給
1 前言前一篇(點我閱讀前一篇《Android應用Preference相關及源碼淺析(SharePreferences篇)》)我們討論分析使用了Android的Share