Add support for passing props to a screen in Android

.gitignore

@@ -145,3 +145,6 @@ xcuserdata
 # UNKNOWN: recommended by others, but I can't discover what these files are
 #
 # ...none. Everything is now explained.:
+android/gradlew
+android/gradlew.bat
+android/local.properties

android/app/src/main/java/com/reactnativenavigation/core/objects/Screen.java

@@ -6,10 +6,12 @@
 
 import com.facebook.react.bridge.ReadableArray;
 import com.facebook.react.bridge.ReadableMap;
+import com.facebook.react.bridge.ReadableNativeMap;
 
 import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.Collections;
+import java.util.HashMap;
 import java.util.List;
 
 /**
@@ -35,6 +37,7 @@ public class Screen extends JsonObject implements Serializable {
     private static final String KEY_TAB_NORMAL_TEXT_COLOR = "tabNormalTextColor";
     private static final String KEY_TAB_SELECTED_TEXT_COLOR = "tabSelectedTextColor";
     private static final String KEY_TAB_INDICATOR_COLOR = "tabIndicatorColor";
+    public static final String KEY_PROPS = "passProps";
 
     public final String title;
     public final String label;
@@ -44,6 +47,7 @@ public class Screen extends JsonObject implements Serializable {
     public final String navigatorEventId;
     public final int icon;
     public final ArrayList<Button> buttons;
+    public HashMap<String, Object> passedProps = new HashMap<>();
 
     // Navigation styling
     @Nullable @ColorInt public Integer toolBarColor;
@@ -57,7 +61,7 @@ public class Screen extends JsonObject implements Serializable {
 
     @NonNull
     public List<Button> getButtons() {
-        return buttons == null ? Collections.EMPTY_LIST : buttons;
+        return buttons == null ? Collections.<Button>emptyList() : buttons;
     }
 
     public Screen(ReadableMap screen) {
@@ -68,15 +72,16 @@ public Screen(ReadableMap screen) {
         navigatorId = getString(screen, KEY_NAVIGATOR_ID);
         navigatorEventId = getString(screen, KEY_NAVIGATOR_EVENT_ID);
         icon = getInt(screen, KEY_ICON);
-
+        if(screen.hasKey(KEY_PROPS)) {
+            passedProps = ((ReadableNativeMap) screen.getMap(KEY_PROPS)).toHashMap();
+        }
         buttons = getButtons(screen);
         setToolbarStyle(screen);
     }
 
     private ArrayList<Button> getButtons(ReadableMap screen) {
-        ArrayList<Button> ret = null;
+        ArrayList<Button> ret = new ArrayList<>();
         if (screen.hasKey(KEY_RIGHT_BUTTONS)) {
-            ret = new ArrayList<>();
             ReadableArray rightButtons = screen.getArray(KEY_RIGHT_BUTTONS);
             for (int i = 0; i < rightButtons.size(); i++) {
                 ret.add(new Button(rightButtons.getMap(i)));

android/app/src/main/java/com/reactnativenavigation/utils/BridgeUtils.java

@@ -0,0 +1,121 @@
+package com.reactnativenavigation.utils;
+
+import android.os.Bundle;
+import android.util.Log;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+
+/**
+ * Created by yedidyak on 26/05/2016.
+ */
+public class BridgeUtils {
+
+    @SuppressWarnings("unchecked")
+    public static Bundle addMapToBundle(HashMap<String, ?> map, Bundle bundle) {
+        for (String key : map.keySet()) {
+            Object value = map.get(key);
+            if (value instanceof String) {
+                bundle.putString(key, (String) value);
+            } else if (value instanceof Integer) {
+                bundle.putInt(key, (Integer) value);
+            } else if (value instanceof Double) {
+                bundle.putDouble(key, ((Double) value));
+            } else if (value instanceof Boolean) {
+                bundle.putBoolean(key, (Boolean) value);
+            } else if (value instanceof HashMap) {
+                bundle.putBundle(key, addMapToBundle((HashMap<String, Object>) value, new Bundle()));
+            } else if (value instanceof ArrayList) {
+                putArray(key, (ArrayList) value, bundle);
+            }
+        }
+        return bundle;
+    }
+
+    @SuppressWarnings("unchecked")
+    private static void putArray(String key, ArrayList arrayList, Bundle bundle) {
+        if (arrayList.size() == 0) {
+            bundle.putBooleanArray(key, new boolean[]{});
+        } else {
+            verifyArrayListIsSingleType(arrayList);
+            if (arrayList.get(0) instanceof String) {
+                bundle.putStringArray(key, toStringArray((ArrayList<String>) arrayList));
+            } else if (arrayList.get(0) instanceof Integer) {
+                bundle.putIntArray(key, toIntArray((ArrayList<Integer>) arrayList));
+            } else if (arrayList.get(0) instanceof Float) {
+                bundle.putFloatArray(key, toFloatArray((ArrayList<Float>) arrayList));
+            } else if (arrayList.get(0) instanceof Double) {
+                bundle.putDoubleArray(key, toDoubleArray((ArrayList<Double>) arrayList));
+            } else if (arrayList.get(0) instanceof Boolean) {
+                bundle.putBooleanArray(key, toBooleanArray((ArrayList<Boolean>) arrayList));
+            } else if (arrayList.get(0) instanceof HashMap) {
+                bundle.putParcelableArray(key, toBundleArray((ArrayList<HashMap>) arrayList));
+            } else if (arrayList.get(0) instanceof ArrayList) {
+                Log.w("RNNavigation", "Arrays of arrays passed in props are converted to dictionaries with indexes as keys");
+                Bundle innerArray = new Bundle();
+                for (int i = 0; i < arrayList.size(); i++) {
+                    putArray(String.valueOf(i), (ArrayList) arrayList.get(i), innerArray);
+                }
+                bundle.putParcelable(key, innerArray);
+            }
+        }
+    }
+
+    private static void verifyArrayListIsSingleType(ArrayList arrayList) {
+        for (int i = 1; i < arrayList.size(); i++) {
+            if (!arrayList.get(i - 1).getClass().isInstance(arrayList.get(i))) {
+                throw new IllegalArgumentException("Cannot pass array of multiple types via props");
+            }
+        }
+    }
+
+    @SuppressWarnings("unchecked")
+    private static Bundle[] toBundleArray(ArrayList<HashMap> arrayList) {
+        Bundle[] ret = new Bundle[arrayList.size()];
+        for (int i=0; i < ret.length; i++) {
+            ret[i] = addMapToBundle(arrayList.get(i), new Bundle());
+        }
+        return ret;
+    }
+
+    private static int[] toIntArray(ArrayList<Integer> arrayList) {
+        int[] ret = new int[arrayList.size()];
+        for (int i=0; i < ret.length; i++) {
+            ret[i] = arrayList.get(i);
+        }
+        return ret;
+    }
+
+    private static float[] toFloatArray(ArrayList<Float> arrayList) {
+        float[] ret = new float[arrayList.size()];
+        for (int i=0; i < ret.length; i++) {
+            ret[i] = arrayList.get(i);
+        }
+        return ret;
+    }
+
+    private static double[] toDoubleArray(ArrayList<Double> arrayList) {
+        double[] ret = new double[arrayList.size()];
+        for (int i=0; i < ret.length; i++) {
+            ret[i] = arrayList.get(i);
+        }
+        return ret;
+    }
+
+    private static boolean[] toBooleanArray(ArrayList<Boolean> arrayList) {
+        boolean[] ret = new boolean[arrayList.size()];
+        for (int i=0; i < ret.length; i++) {
+            ret[i] = arrayList.get(i);
+        }
+        return ret;
+    }
+
+    private static String[] toStringArray(ArrayList<String> arrayList) {
+        String[] ret = new String[arrayList.size()];
+        for (int i=0; i < ret.length; i++) {
+            ret[i] = arrayList.get(i);
+        }
+        return ret;
+    }
+
+}

android/app/src/main/java/com/reactnativenavigation/views/RctView.java

@@ -8,6 +8,7 @@
 import com.facebook.react.ReactRootView;
 import com.reactnativenavigation.activities.BaseReactActivity;
 import com.reactnativenavigation.core.objects.Screen;
+import com.reactnativenavigation.utils.BridgeUtils;
 
 /**
  * Created by guyc on 10/03/16.
@@ -34,6 +35,7 @@ public RctView(BaseReactActivity ctx, ReactInstanceManager rctInstanceManager, S
         this(ctx, rctInstanceManager, screen, null);
     }
 
+    @SuppressWarnings("unchecked")
     public RctView(BaseReactActivity ctx, ReactInstanceManager rctInstanceManager, Screen screen,
                    final OnDisplayedListener onDisplayedListener) {
         super(ctx);
@@ -47,6 +49,9 @@ public RctView(BaseReactActivity ctx, ReactInstanceManager rctInstanceManager, S
         passProps.putString(Screen.KEY_SCREEN_INSTANCE_ID, screen.screenInstanceId);
         passProps.putString(Screen.KEY_NAVIGATOR_ID, screen.navigatorId);
         passProps.putString(Screen.KEY_NAVIGATOR_EVENT_ID, screen.navigatorEventId);
+        if (screen.passedProps != null) {
+            BridgeUtils.addMapToBundle(screen.passedProps, passProps);
+        }
 
         mReactRootView.startReactApplication(rctInstanceManager, componentName, passProps);
 

example-redux/src/app.js

@@ -39,7 +39,28 @@ export default class App {
           screen: {
             screen: 'example.LoginScreen',
             title: 'Login',
-            navigatorStyle: {}
+            navigatorStyle: {},
+            passProps: {
+              str: 'This is a prop passed in \'startSingleScreenApp()\'!',
+              obj: {
+                str: 'This is a prop passed in an object!',
+                arr: [
+                  {
+                    str: 'This is a prop in an object in an array in an object!'
+                  }
+                ],
+                arr2: [
+                    [
+                        'array of strings',
+                        'with two strings'
+                    ],
+                    [
+                        1, 2, 3
+                    ]
+                ]
+              },
+              num: 1234
+            }
           }
         });
         return;
@@ -52,15 +73,39 @@ export default class App {
               icon: require('../img/one.png'),
               selectedIcon: require('../img/one_selected.png'),
               title: 'Screen One',
-              navigatorStyle: {}
+              navigatorStyle: {},
+              passProps: {
+                str: 'This is a prop passed in \'startTabBasedApp\'!',
+                obj: {
+                  str: 'This is a prop passed in an object!',
+                  arr: [
+                    {
+                      str: 'This is a prop in an object in an array in an object!'
+                    }
+                  ]
+                },
+                num: 1234
+              }
             },
             {
               label: 'Two',
               screen: 'example.SecondTabScreen',
               icon: require('../img/two.png'),
               selectedIcon: require('../img/two_selected.png'),
               title: 'Screen Two',
-              navigatorStyle: {}
+              navigatorStyle: {},
+              passProps: {
+                str: 'This is a prop passed in \'startTabBasedApp\'!',
+                obj: {
+                  str: 'This is a prop passed in an object!',
+                  arr: [
+                    {
+                      str: 'This is a prop in an object in an array in an object!'
+                    }
+                  ]
+                },
+                num: 1234
+              }
             }
           ],
           animationType: 'slide-down',

example-redux/src/screens/FirstTabScreen.js

@@ -1,4 +1,4 @@
-import React, {Component} from 'react';
+import React, {Component, PropTypes} from 'react';
 import {
   Text,
   View,
@@ -36,11 +36,19 @@ class FirstTabScreen extends Component {
       }
     ]
   };
+
+  static propTypes = {
+    str: PropTypes.string.isRequired,
+    obj: PropTypes.object.isRequired,
+    num: PropTypes.number.isRequired
+  };
+
   constructor(props) {
     super(props);
     // if you want to listen on navigator events, set this up
     this.props.navigator.setOnNavigatorEvent(this.onNavigatorEvent.bind(this));
   }
+
   onNavigatorEvent(event) {
     switch (event.id) {
       case 'edit':
@@ -75,6 +83,11 @@ class FirstTabScreen extends Component {
         <TouchableOpacity onPress={ this.onShowModalPress.bind(this) }>
           <Text style={styles.button}>Modal Screen</Text>
         </TouchableOpacity>
+
+        <Text style={{fontWeight: '500'}}>String prop: {this.props.str}</Text>
+        <Text style={{fontWeight: '500'}}>Number prop: {this.props.num}</Text>
+        <Text style={{fontWeight: '500'}}>Object prop: {this.props.obj.str}</Text>
+        <Text style={{fontWeight: '500'}}>Array prop: {this.props.obj.arr[0].str}</Text>
       </View>
     );
   }
@@ -86,14 +99,38 @@ class FirstTabScreen extends Component {
   onPushPress() {
     this.props.navigator.push({
       title: "More",
-      screen: "example.PushedScreen"
+      screen: "example.PushedScreen",
+      passProps: {
+        passed: 'This is a prop passed in \'navigator.push()\'!',
+        obj: {
+          str: 'This is a prop passed in an object!',
+          arr: [
+            {
+              str: 'This is a prop in an object in an array in an object!'
+            }
+          ]
+        },
+        num: 1234
+      }
     });
   }
 
   onShowModalPress() {
     this.props.navigator.showModal({
       title: "Modal Screen",
-      screen: "example.PushedScreen"
+      screen: "example.PushedScreen",
+      passProps: {
+        passed: 'This is a prop passed in \'navigator.showModal()\'!',
+        obj: {
+          str: 'This is a prop passed in an object!',
+          arr: [
+            {
+              str: 'This is a prop in an object in an array in an object!'
+            }
+          ]
+        },
+        num: 1234
+      }
     });
   }
 }