XUTILS
XUtils基本操作
- 使用Gradle构建时添加一下依赖即可:
- 拿控件格式
- 添加点击事件格式
- HttpUtils（get和post）
- DBUtils
- Bean类是关键
- DownLoadUtils 断点续传
- INTERESTING!!!!
xUtils 包含了很多实用的android工具.
xUtils 支持超大文件(超过2G)上传，更全面的http请求协议支持(11种谓词)，拥有更加灵活的ORM，更多的事件注解支持且不受混淆影响…
xUtils 最低兼容Android 4.0 (api level 14). (Android 2.3?)
xUtils3变化较多所以建立了新的项目不在旧版(github.com/wyouflf/xUtils)上继续维护, 相对于旧版本:
HTTP实现替换HttpClient为UrlConnection, 自动解析回调泛型, 更安全的断点续传策略.
支持标准的Cookie策略, 区分domain, path…
事件注解去除不常用的功能, 提高性能.
数据库api简化提高性能, 达到和greenDao一致的性能.
图片绑定支持gif, webp; 支持圆角, 圆形, 方形等裁剪, 支持自动旋转…
使用Gradle构建时添加一下依赖即可:
compile ‘org.xutils:xutils:3.1.+’
// or
// compile ‘org.xutils:xutils:3.1.14’
先是如何取控件和添加点击事件
拿控件格式
@ViewInject(R.id.shendf)
var text: TextView? = null;
添加点击事件格式
@Event(value = [R.id.shendf])
private fun initView(view: View){
when(view.id){
R.id.shendf->{
Toast.makeText(this,"点击控件",Toast.LENGTH_SHORT).show()
startActivity(Intent(this,ViewActivity::class.java))
}
}
}
注意 必须是private！！！！！！！！！！！！！！
HttpUtils（get和post）
@ContentView(R.layout.activity_http)
class HttpActivity : AppCompatActivity() {
val url :String = "http://www.qubaobei.com/ios/cf/dish_list.php?stage_id=1&limit=20&page=1"
val post :String = "http://www.qubaobei.com/ios/cf/dish_list.php?"
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
x.view().inject(this)
}
@Event(value = [R.id.btnget,R.id.btnpost],type = View.OnClickListener::class)
private fun httpget(view: View){
when(view.id){
R.id.btnget->{
getData();
}
R.id.btnpost->{
postData();
}
}
}
private fun postData() {
var requestParams = RequestParams();
requestParams.uri = post;
// stage_id=1&limit=20&page=1
requestParams.addBodyParameter("stage_id","1");
requestParams.addBodyParameter("page","1");
x.http().post(requestParams, object :Callback.CommonCallback{
override fun onFinished() {
}
override fun onSuccess(result: String?) {
// 请求成功
Toast.makeText(this@HttpActivity,result,Toast.LENGTH_SHORT).show();
if (result != null) {
parseString(result)
};
}
override fun onCancelled(cex: Callback.CancelledException?) {
// 取消请求
}
override fun onError(ex: Throwable?, isOnCallback: Boolean) {
if (ex != null) {
ex.stackTrace
};
}
})
}
private fun getData() {
var requestParams = RequestParams(url);
// requestParams.uri = url;
x.http().get(requestParams, object :Callback.CommonCallback{
override fun onFinished() {
}
override fun onSuccess(result: String?) {
// 请求成功
Toast.makeText(this@HttpActivity,result,Toast.LENGTH_SHORT).show();
if (result != null) {
parseString(result)
};
}
override fun onCancelled(cex: Callback.CancelledException?) {
// 取消请求
}
override fun onError(ex: Throwable?, isOnCallback: Boolean) {
if (ex != null) {
ex.stackTrace
};
}
})
}
fun parseString(string : String){
val jsonObject = JSONObject(string)
val jsonArray = jsonObject.getJSONArray("data")
var array = ArrayList();
for (i in 0..jsonArray.length()-1 step 1){
val jso1 = jsonArray.getJSONObject(i)
val title = jso1.getString("title")
val pic = jso1.getString("pic")
array.add(Bean(title,pic))
}
mylist.adapter = object :BaseAdapter(){
override fun getView(position: Int, convertView: View?, parent: ViewGroup?): View {
var vHolder:VHolder;
var view:View;
if(convertView == null){
vHolder = VHolder()
view = View.inflate(this@HttpActivity,R.layout.items,null)
vHolder.textView = view.findViewById(R.id.b_text)
vHolder.imageView = view.findViewById(R.id.b_pic)
view.tag = vHolder
}else{
view = convertView
vHolder = view.tag as VHolder
}
vHolder.textView?.text = array[position].title
Glide.with(this@HttpActivity).load(array[position].pic).into(vHolder.imageView)
vHolder.imageView?.setOnClickListener {
var build = AlertDialog.Builder(this@HttpActivity);
val inflate = View.inflate(this@HttpActivity, R.layout.pics, null)
build.setView(inflate)
var pic :ImageView= inflate.findViewById(R.id.mypic)
Glide.with(this@HttpActivity).load(array[position].pic).into(pic)
build.create().show()
}
return view
}
override fun getItem(position: Int): Any {
return array[position]
}
override fun getItemId(position: Int): Long {
return position.toLong()
}
override fun getCount(): Int {
return array.size
}
}
}
class VHolder{
var textView:TextView? = null;
var imageView:ImageView? = null;
}
DBUtils
@ContentView(R.layout.activity_db)
class DBActivity : AppCompatActivity() {
var db: DbManager?=null;
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
x.view().inject(this)
initDB();
}
/**
* 初始化数据库
*/
private fun initDB(){
val daoConfig = DbManager.DaoConfig()
daoConfig.setDbName("UserDBUtils")
daoConfig.setDbVersion(1)
db = x.getDb(daoConfig)
}
@Event(value = [R.id.s_zeng,R.id.s_shan,R.id.s_gai,R.id.s_cha])
private fun click(view: View){
when(view.id){
R.id.s_zeng->{
writeDB();
}
R.id.s_cha->{
readDB();
}
}
}
private fun writeDB() {
val userDBUtils = UserDBUtils()
userDBUtils.id = 1
userDBUtils.name = "申德丰"
userDBUtils.age = "19"
db?.save(userDBUtils);
Toast.makeText(this,"存入数据库",Toast.LENGTH_SHORT).show()
}
private fun readDB() {
val userDBUtils = db?.selector(UserDBUtils::class.java)?.findFirst()
Toast.makeText(this,userDBUtils.toString(),Toast.LENGTH_SHORT).show()
}
}
Bean类是关键
通过table和comple注解与数据库结合
@Table(name = "UserDBUtils")
public class UserDBUtils {
@Column(name = "id",isId = true)
private int id;
@Column(name = "name")
private String name;
@Column(name = "age")
private String age;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAge() {
return age;
}
public void setAge(String age) {
this.age = age;
}
@Override
public String toString() {
return "UserDBUtils{" +
"id=" + id +
", name='" + name + '\'' +
", age='" + age + '\'' +
'}';
}
}
还有就是
DownLoadUtils 断点续传
@ContentView(R.layout.activity_down_load)
class DownLoadActivity : AppCompatActivity() {
var str :String= Environment.getExternalStorageDirectory().path + "/qq.apk"
var cancelable:Callback.Cancelable? = null
var progressDialog :ProgressDialog ? = null
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
x.view().inject(this)
initProgressDialog();
}
private fun initProgressDialog(){
progressDialog = ProgressDialog(this)
progressDialog?.setTitle("下载apk")
progressDialog?.setMessage("Lodaing")
progressDialog?.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL)
progressDialog?.setCanceledOnTouchOutside(false)
progressDialog?.setButton(ProgressDialog.BUTTON_NEGATIVE,"暂停", object :DialogInterface.OnClickListener{
override fun onClick(dialog: DialogInterface?, which: Int) {
cancelable?.cancel()
}
})
}
@Event(value = [R.id.download])
private fun click(view: View){
downloadAPK();
}
private fun downloadAPK() {
//设置参数
var requestParams = RequestParams();
requestParams.uri = "http://softfile.3g.qq.com:8080/msoft/179/24659/43549/qq_hd_mini_1.4.apk"
// 设置断点续传
requestParams.isAutoRename = true
requestParams.saveFilePath = str
requestParams.isCancelFast = true
cancelable = x.http().get(requestParams, object : Callback.ProgressCallback {
override fun onFinished() {
progressDialog?.cancel();
}
override fun onLoading(total: Long, current: Long, isDownloading: Boolean) {
progressDialog?.setProgress( (current * 100 / total).toInt());
}
override fun onStarted() {
progressDialog?.show();
}
override fun onSuccess(result: File?) {
Toast.makeText(this@DownLoadActivity, "下载成功了" + result?.getAbsolutePath(), Toast.LENGTH_SHORT).show()
val intent = Intent()
intent.action = Intent.ACTION_VIEW
intent.setDataAndType(Uri.fromFile(result), "application/vnd.android.package-archive")
intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK
[email protected](intent)
}
override fun onWaiting() {
}
override fun onCancelled(cex: Callback.CancelledException?) {
}
override fun onError(ex: Throwable?, isOnCallback: Boolean) {
ex?.stackTrace
}
})
}
}