思路:
1.基于SharedPreferences,每次打开时,根据上次打开时记录的版本即可区分此次打开的情形。
StoredData.java:
1.Application.onCreate中调用StoredData.getThis().markOpenApp();即可。其他位置就可以根据getLaunchMode判断打开类型了。
package com.example.test;import android.app.Application;import android.content.SharedPreferences;import android.content.pm.PackageInfo;import android.content.pm.PackageManager;import android.text.TextUtils;public class StoredData { public static final int LMODE_NEW_INSTALL = 1; // 启动-模式,首次安装-首次启动、覆盖安装-首次启动、已安装-二次启动 public static final int LMODE_UPDATE = 2; public static final int LMODE_AGAIN = 3; private boolean isOpenMarked = false; private int launchMode = LMODE_AGAIN; // 启动-模式 private static StoredData instance; private SharedPreferences share; // 一般信息 public static StoredData getThis() { if (instance == null) instance = new StoredData(); return instance; } // -------启动状态------------------------------------------------------------ // 标记-打开app,用于产生-是否首次打开 public void markOpenApp() { // 防止-重复调用 if (isOpenMarked) return; isOpenMarked = true; String lastVersion = share.getString("lastVersion", ""); String thisVersion = getAppVersion(); // 首次启动 if (TextUtils.isEmpty(lastVersion)) { launchMode = LMODE_NEW_INSTALL; share.edit().putString("lastVersion", thisVersion).commit(); } // 更新 else if (!thisVersion.equals(lastVersion)) { launchMode = LMODE_UPDATE; share.edit().putString("lastVersion", thisVersion).commit(); } // 二次启动(版本未变) else launchMode = LMODE_AGAIN; } public int getLaunchMode() { return launchMode; } // 首次打开,新安装、覆盖(版本号不同) public boolean isFirstOpen() { return launchMode != LMODE_AGAIN; } // ------------------------- // 软件-版本 public static String getAppVersion() { String versionName = ""; Application app = MyApplication.getThis(); try { PackageManager pkgMng = app.getPackageManager(); PackageInfo pkgInfo = pkgMng .getPackageInfo(app.getPackageName(), 0); versionName = pkgInfo.versionName; } catch (Exception e) { // TODO: handle exception e.printStackTrace(); } return versionName; }}