android中查看 activity, fragment 的渲染时间.

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在你的fragment中, 加上log:   

$ adb logcat -v threadtime  

这样的话, 就可以看到 时间戳了.      (如果不加上 -v threadtime, 就看不到时间戳) 

下面是我们项目中的一个app 的log: 

adb logcat -v threadtime

08-20 20:59:12.120   985  1201 I InputDispatcher: Delivering touch to (15594): action: 0x0, toolType: 1
08-20 20:59:12.120 15594 15594 D ViewRootImpl: ViewPostImeInputStage ACTION_DOWN
08-20 20:59:12.220   985  1201 I InputDispatcher: Delivering touch to (15594): action: 0x1, toolType: 1
08-20 20:59:12.220 15594 15594 I Timeline: Timeline: Activity_launch_request id:com.tuling time:31150008
08-20 20:59:12.260 15594 15594 D TuLingBaseActivity: WebViewActivity
08-20 20:59:12.270 15594 15594 D Activity: performCreate Call secproduct feature valuefalse
08-20 20:59:12.270 15594 15594 D Activity: performCreate Call debug elastic valuetrue
08-20 20:59:12.270 15594 15594 D MyAddressFragment: in onAttach activity
08-20 20:59:12.270 15594 15594 D MyAddressFragment: onCreate
08-20 20:59:12.270 15594 15594 D MyAddressFragment: == onCreateView
08-20 20:59:12.270 15594 15594 D MyAddressFragment: onCreateView
08-20 20:59:12.290 15594 15594 W art     : Attempt to remove local handle scope entry from IRT, ignoring
08-20 20:59:12.290 15594 15594 W AwContents: onDetachedFromWindow called when already detached. Ignoring
08-20 20:59:12.300 15594 15594 D MyAddressFragment: http://h5.touring.com.cn/#!/addresses?uuid=oKB7ww_FSqOs1H9elPWOmGBBCRHM&client=android
08-20 20:59:12.300 15594 15594 D MyAddressFragment: onActivityCreated
08-20 20:59:12.300 15594 15594 D MyAddressFragment: onStart
08-20 20:59:12.300 15594 15594 D MyAddressFragment: onResume
08-20 20:59:12.310 15594 15807 D MyAddressFragment: shouldInterceptRequest:http://h5.touring.com.cn/#!/addresses?uuid=oKB7ww_FSqOs1H9elPWOmGBBCRHM&client=android
08-20 20:59:12.350 15594 15594 D MyAddressFragment: onPageStarted:http://h5.touring.com.cn/#!/addresses?uuid=oKB7ww_FSqOs1H9elPWOmGBBCRHM&client=android
08-20 20:59:12.350 15594 15594 D MyAddressFragment: onPageStarted:http://h5.touring.com.cn/#!/addresses?uuid=oKB7ww_FSqOs1H9elPWOmGBBCRHM&client=android
08-20 20:59:12.420 15594 15594 W BindingManager: Cannot call determinedVisibility() - never saw a connection for the pid: 15594
08-20 20:59:12.420 15594 15594 D MyAddressFragment: doUpdateVisitedHistory:http://h5.touring.com.cn/#!/addresses?uuid=oKB7ww_FSqOs1H9elPWOmGBBCRHM&client=android
08-20 20:59:12.440 15594 15594 I Timeline: Timeline: Activity_idle id: android.os.BinderProxy@147ede85 time:31150219
08-20 20:59:12.780 15594 15594 V ActivityThread: updateVisibility : ActivityRecord{3bb7928a token=android.os.BinderProxy@226da944 {com.tuling/com.tuling.MainActivity}} show : false
08-20 20:59:12.840 15594 15594 I chromium: [INFO:CONSOLE(8)] "==================uuid===oKB7ww_FSqOs1H9elPWOmGBBCRHM", source: http://h5.touring.com.cn/tuling/app.74eaf92fc442f592a2f6.js (8)
08-20 20:59:12.850 15594 15594 I chromium: [INFO:CONSOLE(8)] "oKB7ww_FSqOs1H9elPWOmGBBCRHM", source: http://h5.touring.com.cn/tuling/app.74eaf92fc442f592a2f6.js (8)
08-20 20:59:12.960 15594 15807 D MyAddressFragment: shouldInterceptRequest:http://h5.touring.com.cn/tuling/22.2adee880e5fda75772ba.js
08-20 20:59:12.960 15594 15594 I chromium: [INFO:CONSOLE(39)] "android----------params().client------------", source: http://h5.touring.com.cn/ (39)
08-20 20:59:12.960 15594 15594 I chromium: [INFO:CONSOLE(39)] "android----------params().client------------", source: http://h5.touring.com.cn/ (39)
08-20 20:59:12.960 15594 15594 I chromium: [INFO:CONSOLE(76)] "hide footer start", source: http://h5.touring.com.cn/ (76)
08-20 20:59:13.140 15594 15807 D MyAddressFragment: shouldInterceptRequest:http://h5.touring.com.cn/interface/shopping_addresses/user_address_list?uuid=oKB7ww_FSqOs1H9elPWOmGBBCRHM
08-20 20:59:13.150 15594 15594 D MyAddressFragment: onPageFinished: http://h5.touring.com.cn/#!/addresses?uuid=oKB7ww_FSqOs1H9elPWOmGBBCRHM&client=android
08-20 20:59:13.500 15594 15594 I chromium: [INFO:CONSOLE(1)] "-- show --", source: http://h5.touring.com.cn/tuling/22.2adee880e5fda75772ba.js (1)

第一次:    59:13.500 - 59:12.120 = 1.380 s  

第二次:  10.540 - 9.260 = 1.280 s

3:  29.530 - 28.260 = 1.270 s

4: 55.300 - 54.080 = 1.220 s

5: 19.720 - 16.350 = 1.370 s

6: 34.220 - 32.710 =  1.510 s  (开始从 android studio 调试了)

7: 23.290 - 21.980 = 1.310 s

优化后: 

1. 21.38 - 20.13 =  1.25 s

2. 16.30 - 14.99 = 1.31 s 

3. 55.18 - 53.69 =  1.49 s

附: 下面是源代码:   

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        Log.d(TAG, "== onCreateView");
        return super.onCreateView(inflater, container, savedInstanceState);
    }

    @Override
    public void setup() {
        setTitle("我的地址");
        setRightButtonText("新建");
    }

    @Override
    public void triggerRightBtn() {
        WebViewActivity.show(getActivity(), PageUrls.NEW_ADDRESS, "新建地址", WebViewActivity.FRAGMENT_MY_ADDRESS_NEW, true);
    }

    @Override
    public boolean overrideUrlLoading(WebView view, String url) {
        // 编辑时跳转到编辑页面(创建页面)
        Pattern pattern = Pattern.compile("addresses/\\d*/edit");
        Matcher matcher = pattern.matcher(url);
        if (matcher.find()) {
            Log.d(TAG, "Edit address: " + url);
            WebViewActivity.show(getActivity(), url, "编辑地址", WebViewActivity.FRAGMENT_EDIT_ADDRESS, true);
            return true;
        } else {
            return false;
        }
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        setInterceptRequest(false);
        if (Activity.RESULT_OK == resultCode) {
            refreshWebView();
        }
    }


    @Override
    public void onAttach(Activity activity){
        super.onAttach(activity);
        Log.d(TAG, "in onAttach activity");
    }


    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Log.d(TAG, "onCreate");
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        Log.d(TAG, "onActivityCreated");
    }

    @Override
    public void onStart() {
        super.onStart();
        Log.d(TAG, "onStart");
    }

    @Override
    public void onResume() {
        super.onResume();
        Log.d(TAG, "onResume");
    }

    @Override
    public void onPause() {
        super.onPause();
        Log.d(TAG, "onPause");
    }

    @Override
    public void onStop() {
        super.onStop();
        Log.d(TAG, "onStop");
    }

    @Override
    public void onDestroyView() {
        super.onDestroyView();
        Log.d(TAG, "onDestroyView");
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        Log.d(TAG, "onDestroy");
    }

    @Override
    public void onDetach() {
        super.onDetach();
        Log.d(TAG, "onDetach");
    }

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