正如@insomniac 所说,钩子可用于替换源文件内容以删除错误的导入和/或添加正确的资源导入。
根据他的回答,我可以创建一个脚本来执行此操作,而无需指定文件。它尝试查找源文件(扩展名为.java),删除其中已有的任何资源导入,然后使用 Cordova 应用程序包名称放置正确的资源导入(如果需要)。
这是脚本:
#!/usr/bin/env node
/*
* A hook to add resources class (R.java) import to Android classes which uses it.
*/
function getRegexGroupMatches(string, regex, index) {
index || (index = 1)
var matches = [];
var match;
if (regex.global) {
while (match = regex.exec(string)) {
matches.push(match[index]);
console.log('Match:', match);
}
}
else {
if (match = regex.exec(string)) {
matches.push(match[index]);
}
}
return matches;
}
module.exports = function (ctx) {
// If Android platform is not installed, don't even execute
if (ctx.opts.cordova.platforms.indexOf('android') < 0)
return;
var fs = ctx.requireCordovaModule('fs'),
path = ctx.requireCordovaModule('path'),
Q = ctx.requireCordovaModule('q');
var deferral = Q.defer();
var platformSourcesRoot = path.join(ctx.opts.projectRoot, 'platforms/android/src');
var pluginSourcesRoot = path.join(ctx.opts.plugin.dir, 'src/android');
var androidPluginsData = JSON.parse(fs.readFileSync(path.join(ctx.opts.projectRoot, 'plugins', 'android.json'), 'utf8'));
var appPackage = androidPluginsData.installed_plugins[ctx.opts.plugin.id]['PACKAGE_NAME'];
fs.readdir(pluginSourcesRoot, function (err, files) {
if (err) {
console.error('Error when reading file:', err)
deferral.reject();
return
}
var deferrals = [];
files.filter(function (file) { return path.extname(file) === '.java'; })
.forEach(function (file) {
var deferral = Q.defer();
var filename = path.basename(file);
var file = path.join(pluginSourcesRoot, filename);
fs.readFile(file, 'utf-8', function (err, contents) {
if (err) {
console.error('Error when reading file:', err)
deferral.reject();
return
}
if (contents.match(/[^\.\w]R\./)) {
console.log('Trying to get packages from file:', filename);
var packages = getRegexGroupMatches(contents, /package ([^;]+);/);
for (var p = 0; p < packages.length; p++) {
try {
var package = packages[p];
var sourceFile = path.join(platformSourcesRoot, package.replace(/\./g, '/'), filename)
if (!fs.existsSync(sourceFile))
throw 'Can\'t find file in installed platform directory: "' + sourceFile + '".';
var sourceFileContents = fs.readFileSync(sourceFile, 'utf8');
if (!sourceFileContents)
throw 'Can\'t read file contents.';
var newContents = sourceFileContents
.replace(/(import ([^;]+).R;)/g, '')
.replace(/(package ([^;]+);)/g, '$1 import ' + appPackage + '.R;');
fs.writeFileSync(sourceFile, newContents, 'utf8');
break;
}
catch (ex) {
console.log('Could not add import to "' + filename + '" using package "' + package + '". ' + ex);
}
}
}
});
deferrals.push(deferral.promise);
});
Q.all(deferrals)
.then(function() {
console.log('Done with the hook!');
deferral.resolve();
})
});
return deferral.promise;
}
只需在您的plugin.xml中添加一个after_plugin_install钩子(适用于 Android 平台):
<hook type="after_plugin_install" src="scripts/android/addResourcesClassImport.js" />
希望它可以帮助某人!