好記性不如爛筆頭，今天把 react-native-image-crop-picker 總結(jié)下。廢話不多說，開始。

1.執(zhí)行下面命令行：

npm i react-native-image-crop-picker --save

react-native link react-native-image-crop-picker

安卓配置

1.在android/build.gradle添加以下代碼

allprojects {
    repositories {
      mavenLocal()
      jcenter()
      maven { url "$rootDir/../node_modules/react-native/android" }

     //我是要添加的...
      maven { url "https://jitpack.io" }
    }
}

2.在android/app/build.gradle添加以下代碼

android {
    ...

    defaultConfig {
        //我是要添加的....
        vectorDrawables.useSupportLibrary = true
        ...
    }
    ...
}

3.在android/app/src/main/AndroidManifest.xml添加以下代碼

<uses-permission android:name="android.permission.CAMERA"/>

Ios配置

1.在info.plist內(nèi)添加以下內(nèi)容

Privacy - Photo Library Usage Description
Privacy - Camera Usage Description

image

2.在target添加以下內(nèi)容General添加以下內(nèi)容

image

完整代碼借用一下官方的

import React, {Component} from 'react';
import {
  View, Text, StyleSheet, ScrollView, Alert,
  Image, TouchableOpacity, NativeModules, Dimensions
} from 'react-native';

import Video from 'react-native-video';

var ImagePicker = NativeModules.ImageCropPicker;

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center'
  },
  button: {
    backgroundColor: 'blue',
    marginBottom: 10
  },
  text: {
    color: 'white',
    fontSize: 20,
    textAlign: 'center'
  }
});

export default class App extends Component {

  constructor() {
    super();
    this.state = {
      image: null,
      images: null
    };
  }

  pickSingleWithCamera(cropping) {
    ImagePicker.openCamera({
      cropping: cropping,
      width: 500,
      height: 500,
      includeExif: true,
    }).then(image => {
      console.log('received image', image);
      this.setState({
        image: {uri: image.path, width: image.width, height: image.height},
        images: null
      });
    }).catch(e => alert(e));
  }

  pickSingleBase64(cropit) {
    ImagePicker.openPicker({
      width: 300,
      height: 300,
      cropping: cropit,
      includeBase64: true,
      includeExif: true,
    }).then(image => {
      console.log('received base64 image');
      this.setState({
        image: {uri: `data:${image.mime};base64,`+ image.data, width: image.width, height: image.height},
        images: null
      });
    }).catch(e => alert(e));
  }

  cleanupImages() {
    ImagePicker.clean().then(() => {
      console.log('removed tmp images from tmp directory');
    }).catch(e => {
      alert(e);
    });
  }

  cleanupSingleImage() {
    let image = this.state.image || (this.state.images && this.state.images.length ? this.state.images[0] : null);
    console.log('will cleanup image', image);

    ImagePicker.cleanSingle(image ? image.uri : null).then(() => {
      console.log(`removed tmp image ${image.uri} from tmp directory`);
    }).catch(e => {
      alert(e);
    })
  }

  cropLast() {
    if (!this.state.image) {
      return Alert.alert('No image', 'Before open cropping only, please select image');
    }

    ImagePicker.openCropper({
      path: this.state.image.uri,
      width: 200,
      height: 200
    }).then(image => {
      console.log('received cropped image', image);
      this.setState({
        image: {uri: image.path, width: image.width, height: image.height, mime: image.mime},
        images: null
      });
    }).catch(e => {
      console.log(e);
      Alert.alert(e.message ? e.message : e);
    });
  }

  pickSingle(cropit, circular=false) {
    ImagePicker.openPicker({
      width: 300,
      height: 300,
      cropping: cropit,
      cropperCircleOverlay: circular,
      compressImageMaxWidth: 640,
      compressImageMaxHeight: 480,
      compressImageQuality: 0.5,
      compressVideoPreset: 'MediumQuality',
      includeExif: true,
    }).then(image => {
      console.log('received image', image);
      this.setState({
        image: {uri: image.path, width: image.width, height: image.height, mime: image.mime},
        images: null
      });
    }).catch(e => {
      console.log(e);
      Alert.alert(e.message ? e.message : e);
    });
  }

  pickMultiple() {
    ImagePicker.openPicker({
      multiple: true,
      waitAnimationEnd: false,
      includeExif: true,
    }).then(images => {
      this.setState({
        image: null,
        images: images.map(i => {
          console.log('received image', i);
          return {uri: i.path, width: i.width, height: i.height, mime: i.mime};
        })
      });
    }).catch(e => alert(e));
  }

  scaledHeight(oldW, oldH, newW) {
    return (oldH / oldW) * newW;
  }

  renderVideo(video) {
    return (<View style={{height: 300, width: 300}}>
      <Video source={{uri: video.uri, type: video.mime}}
         style={{position: 'absolute',
            top: 0,
            left: 0,
            bottom: 0,
            right: 0
          }}
         rate={1}
         paused={false}
         volume={1}
         muted={false}
         resizeMode={'cover'}
         onError={e => console.log(e)}
         onLoad={load => console.log(load)}
         repeat={true} />
     </View>);
  }

  renderImage(image) {
    return <Image style={{width: 300, height: 300, resizeMode: 'contain'}} source={image} />
  }

  renderAsset(image) {
    if (image.mime && image.mime.toLowerCase().indexOf('video/') !== -1) {
      return this.renderVideo(image);
    }

    return this.renderImage(image);
  }

  render() {
    return (<View style={styles.container}>
      <ScrollView>
        {this.state.image ? this.renderAsset(this.state.image) : null}
        {this.state.images ? this.state.images.map(i => <View key={i.uri}>{this.renderAsset(i)}</View>) : null}
      </ScrollView>

      <TouchableOpacity onPress={() => this.pickSingleWithCamera(false)} style={styles.button}>
        <Text style={styles.text}>Select Single With Camera</Text>
      </TouchableOpacity>
      <TouchableOpacity onPress={() => this.pickSingleWithCamera(true)} style={styles.button}>
        <Text style={styles.text}>Select Single With Camera With Cropping</Text>
      </TouchableOpacity>
      <TouchableOpacity onPress={() => this.pickSingle(false)} style={styles.button}>
        <Text style={styles.text}>Select Single</Text>
      </TouchableOpacity>
      <TouchableOpacity onPress={() => this.cropLast()} style={styles.button}>
        <Text style={styles.text}>Crop Last Selected Image</Text>
      </TouchableOpacity>
      <TouchableOpacity onPress={() => this.pickSingleBase64(false)} style={styles.button}>
        <Text style={styles.text}>Select Single Returning Base64</Text>
      </TouchableOpacity>
      <TouchableOpacity onPress={() => this.pickSingle(true)} style={styles.button}>
        <Text style={styles.text}>Select Single With Cropping</Text>
      </TouchableOpacity>
      <TouchableOpacity onPress={() => this.pickSingle(true, true)} style={styles.button}>
        <Text style={styles.text}>Select Single With Circular Cropping</Text>
      </TouchableOpacity>
      <TouchableOpacity onPress={this.pickMultiple.bind(this)} style={styles.button}>
        <Text style={styles.text}>Select Multiple</Text>
      </TouchableOpacity>
      <TouchableOpacity onPress={this.cleanupImages.bind(this)} style={styles.button}>
        <Text style={styles.text}>Cleanup All Images</Text>
      </TouchableOpacity>
      <TouchableOpacity onPress={this.cleanupSingleImage.bind(this)} style={styles.button}>
        <Text style={styles.text}>Cleanup Single Image</Text>
      </TouchableOpacity>
    </View>);
  }
}

屬性：

返回值：

問題：1.

image

解決方案：
在android/build.gradle添加以下代碼：

image

 maven { url "https://jitpack.io" }

親測沒有問題，覺得有用的小伙伴點(diǎn)個(gè)小紅心就行??，么么噠。

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作者：妄自
鏈接：http://www.itdecent.cn/p/71dee6198b56
來源：簡書
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