Intent intent = new Intent(Settings.ACTION_USAGE_ACCESS_SETTINGS)。intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK)。startActivity(intent)。之后，获取UsageStatsManager实例并查询最近一天的应用使用记录。UsageStatsManager mUsageStatsManager = (UsageStatsManager) getSystemService(Context.USAGE_STATS_SERVICE)。long time = System.currentTimeMillis()。