获取Android 启动耗时

adb 命令

C:\Users\tdx>adb shell am start -W com.test.Android/com.test.Android.AndroidActivity
Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=com.tdx.AndroidNewTAPP/com.tdx.Android.TdxAndroidActivity }
Status: ok
LaunchState: COLD
Activity: com.tdx.AndroidNewTAPP/com.tdx.Android.TdxAndroidActivity
TotalTime: 2783
WaitTime: 2790
Complete

查看系统打印

2022-02-14 09:38:59.610 1725-1773/? I/ActivityTaskManager: Displayed com.test.Android/com.test.Android.AndroidActivity: +2s724ms

详细耗时打点

方法打点耗时
JakeWharton/hugo: Annotation-triggered method call logging for your debug builds. (github.com)

public class TraceHelper {

    private Map<String,Long> timeMap = new HashMap<>();

    private TraceHelper(){}

    public static TraceHelper getInstance(){
        return ViewHolder.instance;
    }

    /**
     * 保存初始时间
     * @param tag
     */
    public void setStartTime(String tag){
        timeMap.put(tag,System.currentTimeMillis());
    }

    /**
     * 计算耗时
     * @param tag
     */
    public void computeTime(String tag){
        if (timeMap.containsKey(tag)){
            long useTime = System.currentTimeMillis() - timeMap.get(tag);
            tdxLogOut.i("TraceHelper", tag + " +开启耗时+ " + useTime + "ms");
        }

    }

    private static class ViewHolder{
        private static TraceHelper instance = new TraceHelper();
    }
}