FreddyPoly

this.state = {
  animating: false,
};

_startLoading = (bool) => new Promise((resolve) => {
  this.setState({animating: bool});
  resolve(bool);
})

<View

FreddyPoly

// On cherche l'index de l'élément à supprimer (ici un objet)
const index = array.indexOf(leg);

// In exécute la méthode slice si l'index n'est pas -1
// Le deuxième argument est le nombre d'éléments à supprimer
if (index !== -1) array.splice(index, 1);

// Solution à faible performance car la méthode 'slice' est très couteuse
// Si besoins de performances alors utiliser une autre structure de données qu'un Array

FreddyPoly

render(){
    return(
        {yourCondition ? <yourComponent /> : null}
        
        { this.state.btn_state ? <View>
              {this.state.list_options}
          </View> : null }
    )
}

FreddyPoly

import PerfMonitor from 'react-native/Libraries/Performance/RCTRenderingPerf';

componentDidMount() {
    PerfMonitor.toggle();
    setTimeout(() => {
        PerfMonitor.start();
        setTimeout(() => {
            PerfMonitor.stop();
        }, 25000);
    }, 5000);

FreddyPoly

const keys = Object.keys(obj);

keys.map((key) => {
    console.log(`'${key}' : ${obj[key]}`);
});

FreddyPoly

import React, { Component } from 'react';
import {StyleSheet, TouchableOpacity, Image} from 'react-native';

import { THEME } from '../config/env';

class BurgerMenu extends Component {
    constructor(props) {
        super(props);
    }

FreddyPoly

Clean (cmd+shift+K)

Build core React - select React as the scheme in Xcode and build it (cmd+B)

Build the library that is failing (e.g. RCTText).

Build your app (CMD + R)

FreddyPoly

1. Get the fonts (.ttf)

2. Paste the fonts in `./src/assets/fonts/`

3. In `package.json` add:
    “rnpm”: {
       “assets”: [“./src/assets/fonts”]
    }

4. Run `react-native link`

FreddyPoly

Debug SHA1 (root of project)
    
    keytool -J-Duser.language=en -list -v -keystore ~/.android/debug.keystore -alias androiddebugkey -storepass android -keypass android

Release SHA1 (/android/app/)

    keytool -J-Duser.language=en -list -v -keystore mystore.keystore

FreddyPoly

Plutôt utiliser l'outil `Profiler` de Android Studio. Les valeurs données sont différentes.

adb shell dumpsys meminfo <package name | pid> [-d]

adb shell dumpsys meminfo com.awesomeproject [-d]

while sleep 1; do adb shell dumpsys meminfo com.cnhrtkapp | grep 'Unknown\|Gfx dev\|TOTAL'; done