Android Studio實現APK的更新、下載、安裝，androidapk

Android Studio實現APK的更新、下載、安裝，androidapk

先不講那麼多看效果圖：

下面來講解一些更新CODE，原理大家都知道，不廢話，直接上代碼。裡面有一些是我自己做的測試例子，所以大家可以直接刪掉就好了

第一個：activity_main.xml

1 <?xml version="1.0" encoding="utf-8"?> 2 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 3 xmlns:tools="http://schemas.android.com/tools" 4 android:layout_width="match_parent" 5 android:layout_height="match_parent" 6 android:paddingBottom="@dimen/activity_vertical_margin" 7 android:paddingLeft="@dimen/activity_horizontal_margin" 8 android:paddingRight="@dimen/activity_horizontal_margin" 9 android:paddingTop="@dimen/activity_vertical_margin" 10 tools:context="com.example.fucm.wms_jianh.MainActivity"> 11 12 <Button 13 android:layout_width="wrap_content" 14 android:layout_height="wrap_content" 15 android:text="@string/btn_sq" 16 android:id="@+id/btn_sq" 17 android:layout_alignParentTop="true" 18 android:layout_centerHorizontal="true" 19 android:layout_marginTop="197dp" /> 20 21 <ListView 22 android:layout_width="wrap_content" 23 android:layout_height="wrap_content" 24 android:id="@+id/listView" 25 android:layout_toStartOf="@+id/btn_sq" 26 android:layout_alignParentTop="true" 27 android:layout_alignParentEnd="true" /> 28 29 <Button 30 android:layout_width="wrap_content" 31 android:layout_height="wrap_content" 32 android:text="更新" 33 android:id="@+id/button" 34 android:layout_below="@+id/btn_sq" 35 android:layout_centerHorizontal="true"/> 36 37 </RelativeLayout> View Code

第二個：MainActivity.java

package com.example.fucm.wms_jianh; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.os.StrictMode; import android.view.View; import android.view.View.OnClickListener; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.ListView; import org.json.JSONArray; import org.json.JSONObject; import java.util.ArrayList; import java.util.List; import MyClass.HttpHelper; import MyClass.SoftUpdate; public class MainActivity extends Activity implements OnClickListener{ Button btn1,btn2; ListView listView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder() .detectDiskReads().detectDiskWrites().detectAll() // or // .detectAll() // for all // detectable // problems .penaltyLog().build()); StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder() .detectLeakedSqlLiteObjects().detectLeakedClosableObjects() .penaltyLog().penaltyDeath().build()); setContentView(R.layout.activity_main); btn1 = (Button) findViewById(R.id.btn_sq); btn2 = (Button) findViewById(R.id.button); btn1.setOnClickListener(this); listView = (ListView)findViewById(R.id.listView); btn2.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { SoftUpdate manager = new SoftUpdate(MainActivity.this); // 檢查軟件更新 manager.checkUpdate(); } }); } } View Code

第三個：HttpHelper.java

package MyClass; import org.apache.http.HttpResponse; import org.apache.http.HttpStatus; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpGet; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.params.BasicHttpParams; import org.apache.http.params.HttpConnectionParams; import org.apache.http.params.HttpParams; import org.apache.http.util.EntityUtils; import org.json.JSONArray; import org.json.JSONObject; import java.io.IOException; public class HttpHelper { private static final int REQUEST_TIMEOUT = 15 * 1000; private static final int SO_TIMEOUT = 15 * 1000; public static String sendHttpRequest(String pUrl) { String result; result = doGet(pUrl); return result; } public static String doGet(String url) { String result = null; HttpParams httpParams = new BasicHttpParams(); HttpConnectionParams.setConnectionTimeout(httpParams, REQUEST_TIMEOUT); HttpConnectionParams.setSoTimeout(httpParams, SO_TIMEOUT); HttpClient httpClient = new DefaultHttpClient(httpParams); HttpGet httpGet = new HttpGet(url); try { HttpResponse response = httpClient.execute(httpGet); if (response.getStatusLine().getStatusCode() != HttpStatus.SC_OK) { } result = EntityUtils.toString(response.getEntity(), "UTF-8"); } catch (IOException e) { //Log.i("GET", "Bad Request!"); } return result; } public static String GetJsonListValue(String str) { String strError=""; try { JSONObject json1 = new JSONObject(str); JSONObject tmp = json1.getJSONObject("d"); return tmp.getString("a"); } catch (Exception e) { strError=e.toString(); } return strError; } public static JSONArray GetJsonValue(String str) { try { JSONArray json1 = new JSONArray(str); return json1; } catch (Exception e) { //strError=e.toString(); } return null; } } View Code

第四個：SoftUpdate.java

package MyClass; import android.app.AlertDialog; import android.app.AlertDialog.Builder; import android.app.Dialog; import android.content.Context; import android.content.DialogInterface; import android.content.DialogInterface.OnClickListener; import android.content.Intent; import android.content.pm.PackageManager; import android.net.Uri; import android.os.Environment; import android.os.Handler; import android.os.Message; import android.view.LayoutInflater; import android.view.View; import android.widget.ProgressBar; import android.widget.Toast; import com.example.fucm.wms_jianh.R; import org.json.JSONArray; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.URL; /** * Created by fucm on 2016-07-06. */ public class SoftUpdate { /* 下載中 */ private static final int DOWNLOAD = 1; /* 下載結束 */ private static final int DOWNLOAD_FINISH = 2; /* 保存解析的XML信息 */ private Long str_version; private String str_appname; private String str_downurl; /* 下載保存路徑 */ private String mSavePath; /* 記錄進度條數量 */ private int progress; /* 是否取消更新 */ private boolean cancelUpdate = false; private Context mContext; /* 更新進度條 */ private ProgressBar mProgress; private Dialog mDownloadDialog; public SoftUpdate(Context context) { this.mContext = context; } private Handler mHandler = new Handler() { public void handleMessage(Message msg) { switch (msg.what) { // 正在下載 case DOWNLOAD: // 設置進度條位置 mProgress.setProgress(progress); break; case DOWNLOAD_FINISH: // 安裝文件 installApk(); break; default: break; } }; }; /** * 檢測軟件更新 */ public void checkUpdate() { if (isUpdate()) { // 顯示提示對話框 showNoticeDialog(); } else { Toast.makeText(mContext, R.string.soft_update_no, Toast.LENGTH_LONG).show(); } } /** * 檢查軟件是否有更新版本 * * @return */ private boolean isUpdate(){ // 獲取當前軟件版本 int versionCode = getVersionCode(mContext); //通過服務器獲得版本號 try { String str = HttpHelper.sendHttpRequest("http://127.0.0.1/Service1.svc/get_version"); JSONArray json1 =HttpHelper.GetJsonValue(str); str_version=json1.getLong(0); str_appname=json1.getString(1); str_downurl=json1.getString(2); if (str_version > versionCode) { return true; } } catch (Exception e) { //strError=e.toString(); } return false; } /** * 獲取軟件版本號 * * @param context * @return */ private int getVersionCode(Context context) { int versionCode = 0; try { // 獲取軟件版本號，對應AndroidManifest.xml下android:versionCode versionCode = context.getPackageManager().getPackageInfo("com.example.fucm.wms_jianh", 0).versionCode; } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); } return versionCode; } /** * 顯示軟件更新對話框 */ private void showNoticeDialog() { // 構造對話框 AlertDialog.Builder builder = new Builder(mContext); builder.setTitle(R.string.soft_update_title); builder.setMessage(R.string.soft_update_info); // 更新 builder.setPositiveButton(R.string.soft_update_updatebtn, new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); // 顯示下載對話框 showDownloadDialog(); } }); // 稍後更新 builder.setNegativeButton(R.string.soft_update_later, new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); } }); Dialog noticeDialog = builder.create(); noticeDialog.show(); } /** * 顯示軟件下載對話框 */ private void showDownloadDialog() { // 構造軟件下載對話框 AlertDialog.Builder builder = new Builder(mContext); builder.setTitle(R.string.soft_updating); // 給下載對話框增加進度條 final LayoutInflater inflater = LayoutInflater.from(mContext); View v = inflater.inflate(R.layout.soft_update, null); mProgress = (ProgressBar) v.findViewById(R.id.update_progress); builder.setView(v); // 取消更新 builder.setNegativeButton(R.string.soft_update_cancel, new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); // 設置取消狀態 cancelUpdate = true; } }); mDownloadDialog = builder.create(); mDownloadDialog.show(); // 現在文件 downloadApk(); } /** * 下載apk文件 */ private void downloadApk() { // 啟動新線程下載軟件 new downloadApkThread().start(); } /** * 下載文件線程 * * @author coolszy *@date 2012-4-26 *@blog http://blog.92coding.com */ private class downloadApkThread extends Thread { @Override public void run() { try { // 判斷SD卡是否存在，並且是否具有讀寫權限 if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) { // 獲得存儲卡的路徑 String sdpath = Environment.getExternalStorageDirectory() + "/"; mSavePath = sdpath + "download"; URL url= new URL(str_downurl); // 創建連接 HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.connect(); // 獲取文件大小 int length = conn.getContentLength(); // 創建輸入流 InputStream is = conn.getInputStream(); File file = new File(mSavePath); // 判斷文件目錄是否存在 if (!file.exists()) { file.mkdir(); } File apkFile = new File(mSavePath, str_appname); FileOutputStream fos = new FileOutputStream(apkFile); int count = 0; // 緩存 byte buf[] = new byte[1024]; // 寫入到文件中 do { int numread = is.read(buf); count += numread; // 計算進度條位置 progress = (int) (((float) count / length) * 100); // 更新進度 mHandler.sendEmptyMessage(DOWNLOAD); if (numread <= 0) { // 下載完成 mHandler.sendEmptyMessage(DOWNLOAD_FINISH); break; } // 寫入文件 fos.write(buf, 0, numread); } while (!cancelUpdate);// 點擊取消就停止下載. fos.close(); is.close(); } } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } // 取消下載對話框顯示 mDownloadDialog.dismiss(); } }; /** * 安裝APK文件 */ private void installApk() { File apkfile = new File(mSavePath, str_appname); if (!apkfile.exists()) { return; } // 通過Intent安裝APK文件 Intent i = new Intent(Intent.ACTION_VIEW); i.setDataAndType(Uri.parse("file://" + apkfile.toString()), "application/vnd.android.package-archive"); mContext.startActivity(i); } } View Code

第五個：soft_update.xml

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent"> <ProgressBar android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/update_progress"/> </LinearLayout> View Code

第六個：AndroidManifest.xml（創建的時候自帶）

 

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.fucm.wms_jianh" android:versionCode="1" android:versionName="1.0"> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/> <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" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name=".RwdMxActivity"> </activity> </application> </manifest> View Code

更正一下：有的APK的版本信息是在build.gradle這個裡面

第七個：strings.xml（創建的時候自帶）

<resources> <string name="app_name">WMS_JIANH</string> <string name="btn_sq">任務索取</string> <string name="soft_update_no">已經是最新版本</string> <string name="soft_update_title">軟件更新</string> <string name="soft_update_info">檢測到新版本，立即更新嗎</string> <string name="soft_update_updatebtn">更新</string> <string name="soft_update_later">稍後更新</string> <string name="soft_updating">正在更新</string> <string name="soft_update_cancel">取消</string> </resources> View Code

第八個：看看工程結構

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