React Native File选择器

>从github安装包

npm install https://github.com/Lichwa/react-native-file-picker –save
>然后链接它：

rnpm link react-native-file-picker
>导入包

var FilePickerManager = require(‘NativeModules’).FilePickerManager;
>然后像这样使用它：

const options = {
    title: 'File Picker',chooseFileButtonTitle: 'Choose File...'
};

FilePickerManager.showFilePicker(options,(response) => {
    console.log('Response = ',response);

    if (response.didCancel) {
        console.log('User cancelled photo picker');
    }
    else if (response.error) {
        console.log('ImagePickerManager Error: ',response.error);
    }
    else if (response.customButton) {
        console.log('User tapped custom button: ',response.customButton);
    }
    else {
        this.setState({
            file: response
        });
    }
});