android 實現app內部檢測最新版本 自動升級到最新版本
阿新 • • 發佈：2019-01-08
app現在基本都有版本更新這個功能，實現起來也很簡單
截圖效果：
1. 獲取當前app的版本號
2.根據版本號名稱判斷版本高低/** * 獲取版本號 * * @throws PackageManager.NameNotFoundException */ public static String getVersionName(Context context) throws PackageManager.NameNotFoundException { // 獲取packagemanager的例項 PackageManager packageManager = context.getPackageManager(); // getPackageName()是你當前類的包名，0代表是獲取版本資訊 PackageInfo packInfo = packageManager.getPackageInfo(context.getPackageName(), 0); String version = packInfo.versionName; return version; }
3.從伺服器獲取最新版本號/** * 版本號比較 *0代表相等，1代表version1大於version2，-1代表version1小於version2 * @param version1 * @param version2 * @return */ public static int compareVersion(String version1, String version2) { if (version1.equals(version2)) { return 0; } String[] version1Array = version1.split("\\."); String[] version2Array = version2.split("\\."); int index = 0; // 獲取最小長度值 int minLen = Math.min(version1Array.length, version2Array.length); int diff = 0; // 迴圈判斷每位的大小 while (index < minLen && (diff = Integer.parseInt(version1Array[index]) - Integer.parseInt(version2Array[index])) == 0) { index++; } if (diff == 0) { // 如果位數不一致，比較多餘位數 for (int i = index; i < version1Array.length; i++) { if (Integer.parseInt(version1Array[i]) > 0) { return 1; } } for (int i = index; i < version2Array.length; i++) { if (Integer.parseInt(version2Array[i]) > 0) { return -1; } } return 0; } else { return diff > 0 ? 1 : -1; } }
/** * 從伺服器獲取版本最新的版本資訊 */ private void getVersionInfoFromServer(){ //模擬從伺服器獲取資訊 模擬更新王者榮耀 versionInfoBean = new VersionInfoBean("1.1.1","http://dlied5.myapp.com/myapp/1104466820/sgame/2017_com.tencent.tmgp.sgame_h162_1.33.1.8_9c4c7f.apk","1.修復若干bug\n\n2.新增圖片編輯功能" ,getExternalCacheDir()+"/1.1.1.jpg"); SharedPreferences sharedPreferences = getSharedPreferences("data",MODE_PRIVATE); sharedPreferences.edit().putString("url",versionInfoBean.getDownloadUrl()).commit(); sharedPreferences.edit().putString("path",versionInfoBean.getPath()).commit();//getExternalCacheDir獲取到的路徑 為系統為app分配的記憶體 解除安裝app後 該目錄下的資源也會刪除 //比較版本資訊 try { int result = Utils.compareVersion(Utils.getVersionName(this),versionInfoBean.getVersionName()); if(result==-1){//不是最新版本 showDialog(); }else{ Toast.makeText(MainActivity.this,"已經是最新版本",Toast.LENGTH_SHORT).show(); } } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); } }
4.彈出dialog提示更新
private void showDialog(){
final Dialog dialog = new Dialog(MainActivity.this);
LayoutInflater inflater = (LayoutInflater)MainActivity.this
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
TextView version,content;
Button left,right;
View view = inflater.inflate(R.layout.version_update,null,false);
version = (TextView)view.findViewById(R.id.version);
content = (TextView)view.findViewById(R.id.content);
left = (Button)view.findViewById(R.id.left);
right = (Button)view.findViewById(R.id.right);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
content.setText(Html.fromHtml(versionInfoBean.getDesc(),Html.FROM_HTML_MODE_LEGACY));
}else{
content.setText(Html.fromHtml(versionInfoBean.getDesc()));
}
content.setMovementMethod(LinkMovementMethod.getInstance());
version.setText("版本號："+versionInfoBean.getVersionName());
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
left.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
dialog.dismiss();
}
});
right.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
dialog.dismiss();
downloadNewVersionFromServer();
}
});
dialog.setContentView(view);
dialog.setCancelable(false);
Window dialogWindow = dialog.getWindow();
dialogWindow.setGravity(Gravity.CENTER);
//dialogWindow.setWindowAnimations(R.style.ActionSheetDialogAnimation);
WindowManager.LayoutParams lp = dialogWindow.getAttributes();
WindowManager wm = (WindowManager)
getSystemService(Context.WINDOW_SERVICE);
lp.width =wm.getDefaultDisplay().getWidth()/10*9;
dialogWindow.setAttributes(lp);
dialog.show();
}5.啟動service後臺下載
/**
* 啟動服務後臺下載
*/
private void downloadNewVersionFromServer(){
if(new File(versionInfoBean.getPath()).exists()){
new File(versionInfoBean.getPath()).delete();
}
Toast.makeText(MainActivity.this,"開始下載...",Toast.LENGTH_SHORT).show();
LoadingService.startUploadImg(this);
}6.定義廣播接受者接受下載狀態
宣告變數isLoading表示下載狀態
/**
* 定義廣播接收者 接受下載狀態
*/
public class MyReceive extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if("android.intent.action.loading_over".equals(action)){
isLoading = false;
}else if("android.intent.action.loading".equals(action)){
isLoading = true;
}
}
}public class LoadingService extends IntentService {
private HttpUtils httpUtils;
NotificationManager nm;
private String url,path;
private SharedPreferences sharedPreferences;
public LoadingService(String name) {
super(name);
}
public LoadingService() {
super("MyService");
}
public static void startUploadImg(Context context)
{
Intent intent = new Intent(context, LoadingService.class);
context.startService(intent);
}
public void onCreate() {
super.onCreate();
httpUtils = new HttpUtils();
httpUtils.configCurrentHttpCacheExpiry(0);
nm = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
sharedPreferences = getSharedPreferences("data",MODE_PRIVATE);
}
@Override
protected void onHandleIntent(@Nullable Intent intent) {
updateApk();
}
//開始下載apk 網路請求使用的是xutils框架
private void updateApk(){
url = sharedPreferences.getString("url","");
path = sharedPreferences.getString("path","");
httpUtils.download(url,
path , new RequestCallBack<File>() {
@Override
public void onLoading(final long total, final long current,
boolean isUploading) {
createNotification(total,current);
sendBroadcast(new Intent().setAction("android.intent.action.loading"));//傳送正在下載的廣播
super.onLoading(total, current, isUploading);
}
@Override
public void onSuccess(ResponseInfo<File> arg0) {
nm.cancel(R.layout.notification_item);
Toast.makeText(LoadingService.this,"下載成功...",Toast.LENGTH_SHORT).show();
installApk();//下載成功 開啟安裝介面
stopSelf();//結束服務
sendBroadcast(new Intent().setAction("android.intent.action.loading_over"));//傳送下載結束的廣播
}
@Override
public void onFailure(HttpException arg0, String arg1) {
Toast.makeText(LoadingService.this,"下載失敗...",Toast.LENGTH_SHORT).show();
sendBroadcast(new Intent().setAction("android.intent.action.loading_over"));//傳送下載結束的廣播
nm.cancel(R.layout.notification_item);
stopSelf();
}
});
}
/**
* 安裝下載的新版本
*/
protected void installApk() {
Intent intent = new Intent();
intent.addCategory(Intent.CATEGORY_DEFAULT);
File file = new File(path);
Uri uri = Uri.fromFile(file);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setDataAndType(uri, "application/vnd.android.package-archive");
this.startActivity(intent);
}
//傳送通知 實時更新通知欄下載進度
private void createNotification(final long total, final long current){
NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
builder.setSmallIcon(R.mipmap.ic_launcher);//必須要設定這個屬性，否則不顯示
RemoteViews contentView = new RemoteViews(this.getPackageName(),R.layout.notification_item);
contentView.setProgressBar(R.id.progress, (int)total, (int)current, false);
builder.setOngoing(true);//設定左右滑動不能刪除
Notification notification = builder.build();
notification.contentView = contentView;
nm.notify(R.layout.notification_item,notification);//傳送通知
}