Android简易音乐重构MVVM Java版-LiveData+用户登录+http模块（十）
关于
本篇内容主要是http模块（retrofit+okhttp3）重构，以及登录页面的重构。
效果图
app启动图标在上篇放出的百度网盘链接里面有对应图片。
添加http模块
结构图如下：
添加 ApiService
import androidx.lifecycle.LiveData;
import com.tobery.livedata.call.livedatalib.ApiResponse;
import com.tobery.personalmusic.entity.Login_Bean;
import com.tobery.personalmusic.entity.MainRecommendListBean;
import com.tobery.personalmusic.entity.SearchHotDetail_Bean;
import com.tobery.personalmusic.entity.banner_bean;
import io.reactivex.Observable;
import retrofit2.http.GET;
import retrofit2.http.POST;
import retrofit2.http.Query;
public interface ApiService {
@GET("banner")
LiveData<ApiResponse<banner_bean>> getBanner(@Query("type") int type);
@GET("login/cellphone")
Observable<Login_Bean> login(@Query("phone") String phone, @Query("password") String password);
}
添加RetrofitUtils请求网络api
public class RetrofitUtils {
/**
* 单例模式
*/
public static ApiService apiService;
public static ApiService getmApiUrl(){
if (apiService == null){
synchronized (RetrofitUtils.class){
if (apiService == null){
apiService = new RetrofitUtils().getRetrofit();
}
}
}
return apiService;
}
private ApiService getRetrofit() {
//初始化Retrofit
ApiService apiService = initRetrofit(initOkHttp()).create(ApiService.class);
return apiService;
}
private OkHttpClient initOkHttp() {
//ClearableCookieJar cookieJar = new PersistentCookieJar(new SetCookieCache(), new SharedPrefsCookiePersistor(MyApplication.getContext()));
return new OkHttpClient().newBuilder()
.readTimeout(Constant.DEFAULT_TIME, TimeUnit.SECONDS) //设置读取超时时间
.connectTimeout(Constant.DEFAULT_TIME,TimeUnit.SECONDS) //设置请求超时时间
.writeTimeout(Constant.DEFAULT_TIME,TimeUnit.SECONDS) //设置写入超时时间
.addInterceptor(new LogInterceptor()) //添加打印拦截器
.retryOnConnectionFailure(true) //设置出错进行重新连接
//.cookieJar(cookieJar)
.build();
}
/**
* 初始化Retrofit
*/
@NonNull
private Retrofit initRetrofit(OkHttpClient client){
return new Retrofit.Builder()
.client(client)
.baseUrl(Constant.BaseUrl)
.addCallAdapterFactory(RxJava2CallAdapterFactory.create())
.addCallAdapterFactory(LiveDataCallAdapterFactory.create())//livedataFactory
.addConverterFactory(GsonConverterFactory.create())
.build();
}
}
添加RXHelper用于线程切换
public class RXHelper {
public static <T> ObservableTransformer<T, T> observableIO2Main(final Context context) {
return upstream -> {
Observable<T> observable = upstream.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread());
return composeContext(context, observable);
};
}
public static <T> ObservableTransformer<T, T> observableIO2Main(final RxFragment fragment) {
return upstream -> upstream.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread()).compose(fragment.<T>bindToLifecycle());
}
public static <T> FlowableTransformer<T, T> flowableIO2Main() {
return upstream -> upstream
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread());
}
private static <T> ObservableSource<T> composeContext(Context context, Observable<T> observable) {
if(context instanceof RxActivity) {
return observable.compose(((RxActivity) context).bindUntilEvent(ActivityEvent.DESTROY));
} else if(context instanceof RxFragmentActivity){
return observable.compose(((RxFragmentActivity) context).bindUntilEvent(ActivityEvent.DESTROY));
}else if(context instanceof RxAppCompatActivity){
return observable.compose(((RxAppCompatActivity) context).bindUntilEvent(ActivityEvent.DESTROY));
}else {
return observable;
}
}
}
添加RxExceptionUtil网络异常处理类
public class RxExceptionUtil {
public static String exceptionHandler(Throwable e){
String errMsg = "未知错误";
if (e instanceof UnknownHostException){
errMsg = "网络不可用";
}else if (e instanceof SocketTimeoutException){
errMsg = "请求网络超时";
}else if (e instanceof HttpException) {
HttpException httpException = (HttpException) e;
errMsg = convertStatusCode(httpException);
}else if (e instanceof ParseException || e instanceof JSONException){
errMsg = "数据解析错误";
}
return errMsg;
}
private static String convertStatusCode(HttpException httpException) {
String msg;
if (httpException.code() >= 500 && httpException.code() < 600) {
msg = "服务器处理请求出错";
} else if (httpException.code() >= 400 && httpException.code() < 500) {
msg = "服务器无法处理请求";
} else if (httpException.code() >= 300 && httpException.code() < 400) {
msg = "请求被重定向到其他页面";
} else {
msg = httpException.message();
}
return msg;
}
}
拦截器LogInterceptor打印请求和返回日志
public class LogInterceptor implements Interceptor {
@Override
public Response intercept(Chain chain) throws IOException {
Request request = chain.request();
Log.d("拦截器---->","request:"+request.toString());
long t1 = System.nanoTime();
Response response = chain.proceed(chain.request());
long t2 = System.nanoTime();
Log.d("拦截器---->",String.format(Locale.getDefault(), "Received response for %s in %.1fms%n%s",
response.request().url(), (t2 - t1) / 1e6d, response.headers()));
MediaType mediaType = response.body().contentType();
String content = response.body().string();
Log.d("拦截器---->","response body:"+content);
return response.newBuilder()
.body(ResponseBody.create(mediaType,content))
.build();
}
}
添加GeneratedAppGlideModule
@GlideModule
public class GeneratedAppGlideModule extends AppGlideModule {
@Override
public boolean isManifestParsingEnabled() {
return false;
}
}
定义LoginUi绑定用户账号密码
public class LoginUi implements Serializable {
public ObservableField<String> userName;
public ObservableField<String> password;
public LoginUi(ObservableField<String> userName, ObservableField<String> password) {
this.password = password;
this.userName = userName;
}
}
新增LoginViewModel
public class LoginViewModel extends ViewModel {
private SavedStateHandle state;
public LoginUi ui;
public LoginViewModel(SavedStateHandle savedStateHandle) {
this.state = savedStateHandle;
ui = state.get(KEY_LOGIN_UI) == null?new LoginUi(new ObservableField<>(""),new ObservableField<>("")):state.get(KEY_LOGIN_UI);
}
public Observable<Login_Bean> login() {
return RetrofitUtils.getmApiUrl().login(ui.userName.get(),ui.password.get());
}
}
新增页面login页面
新增activity_login.xml
<?xml version="1.0" encoding="utf-8"?>
<layout
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools">
<data>
<variable
name="vm"
type="com.tobery.personalmusic.ui.login.LoginViewModel" />
</data>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".ui.login.LoginActivity">
<include
android:id="@+id/title"
layout="@layout/ui_common_title" />
<TextView
android:id="@+id/im_User"
android:layout_width="@dimen/dp_25"
android:layout_height="@dimen/dp_25"
android:layout_marginStart="@dimen/dp_30"
android:layout_marginTop="@dimen/dp_30"
android:background="@drawable/ic_login_user"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/title"
/>
<EditText
android:id="@+id/edit_user"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="@dimen/dp_35"
android:layout_marginEnd="@dimen/dp_30"
android:background="@null"
android:hint="@string/input_phone"
android:inputType="phone"
android:maxLength="20"
android:maxLines="1"
android:text="@={vm.ui.userName}"
android:textColor="@color/tv_black"
android:textColorHint="@color/tv_hint"
android:textSize="@dimen/sp_15"
app:layout_constraintStart_toEndOf="@id/im_User"
app:layout_constraintStart_toStartOf="@id/im_User"
app:layout_constraintBottom_toBottomOf="@id/im_User"
/>
<View
android:id="@+id/view_user"
android:layout_width="match_parent"
android:layout_height="@dimen/dp_1"
android:layout_marginLeft="@dimen/dp_30"
android:layout_marginRight="@dimen/dp_30"
android:layout_marginTop="@dimen/dp_12"
android:background="@color/color_border"
app:layout_constraintTop_toBottomOf="@id/im_User"
/>
<TextView
android:id="@+id/im_password"
android:layout_width="@dimen/dp_25"
android:layout_height="@dimen/dp_25"
android:layout_marginStart="@dimen/dp_30"
android:layout_marginTop="@dimen/dp_30"
android:background="@drawable/ic_login_password"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/view_user"
/>
<EditText
android:id="@+id/edit_password"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="@dimen/dp_35"
android:layout_marginEnd="@dimen/dp_30"
android:background="@null"
android:hint="@string/input_pwd"
android:maxLength="20"
android:maxLines="1"
android:text="@={vm.ui.password}"
android:textColor="@color/tv_black"
android:textColorHint="@color/tv_hint"
android:textSize="@dimen/sp_15"
app:layout_constraintStart_toStartOf="@id/im_User"
app:layout_constraintTop_toTopOf="@id/im_password"
app:layout_constraintBottom_toBottomOf="@id/im_password"
/>
<View
android:id="@+id/view_password"
android:layout_width="match_parent"
android:layout_height="@dimen/dp_1"
android:layout_marginLeft="@dimen/dp_30"
android:layout_marginRight="@dimen/dp_30"
android:layout_marginTop="@dimen/dp_12"
android:background="@color/color_border"
app:layout_constraintTop_toBottomOf="@id/im_password"
/>
<Button
android:id="@+id/btn_login"
android:layout_width="match_parent"
android:layout_height="@dimen/dp_45"
android:layout_marginStart="@dimen/dp_60"
android:layout_marginTop="@dimen/dp_30"
android:layout_marginEnd="@dimen/dp_60"
android:background="@drawable/shape_btn_login_confirm"
android:text="@string/login"
android:textColor="@color/tv_white"
app:layout_constraintTop_toBottomOf="@id/view_password"
/>
</androidx.constraintlayout.widget.ConstraintLayout>
</layout>
添加通用标题栏
新建ui_common_title.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/title"
android:layout_width="match_parent"
android:background="@color/colorPrimary"
android:layout_height="@dimen/dp_45">
<TextView
android:id="@+id/iv_back"
android:layout_width="@dimen/dp_30"
android:layout_height="@dimen/dp_30"
android:background="@drawable/ic_common_back"
android:layout_marginStart="@dimen/dp_15"
android:layout_marginTop="@dimen/dp_5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
/>
<TextView
android:id="@+id/tv_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_centerInParent="true"
android:layout_centerHorizontal="true"
android:layout_marginStart="@dimen/dp_15"
android:textColor="@color/tv_black"
android:textSize="@dimen/sp_18"
android:typeface="monospace"
android:visibility="gone"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
/>
</androidx.constraintlayout.widget.ConstraintLayout>
添加登录按钮背景
新增shape_btn_login_confirm.xml：
<?xml version="1.0" encoding="utf-8"?>
<shape android:shape="rectangle" xmlns:android="http://schemas.android.com/apk/res/android">
<corners android:radius="@dimen/dp_40"/>
<solid android:color="@color/colorPrimary"/>
</shape>
修改LoginActivity.java
public class LoginActivity extends BaseActivity {
private ActivityLoginBinding binding;
private LoginViewModel viewModel;
private AlertDialog dialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
binding = DataBindingUtil.setContentView(this, R.layout.activity_login);
binding.setLifecycleOwner(this);
viewModel = new ViewModelProvider(this).get(LoginViewModel.class);
binding.setVm(viewModel);
initView();
}
private void initView() {
binding.title.ivBack.setOnClickListener(view -> finish());
binding.btnLogin.setOnClickListener(view -> {
if (ClickUtil.enableClick()){
if (Objects.requireNonNull(viewModel.ui.userName.get()).isEmpty() || viewModel.ui.password.get().isEmpty()){
ToastUtils.show(R.string.toast_login);
return;
}
dialog = AlertDialogUtil.Companion.createLoading(this,"登录中");
viewModel.login()
.compose(RXHelper.observableIO2Main(this))
.subscribe(new Observer<Login_Bean>() {
@Override
public void onSubscribe(Disposable d) {
}
@Override
public void onNext(Login_Bean login_bean) {
Log.e("数据",login_bean.toString());
AlertDialogUtil.Companion.closeDialog(dialog);
if (login_bean.getCode() == 200){
SharePreferencesUtil.getInstance(LoginActivity.this).saveUserInfo(login_bean,viewModel.ui.userName.get());
Intent intent = new Intent(LoginActivity.this, MainActivity.class);
startActivity(intent);
finish();
}else if (login_bean.getCode() == 502){
ToastUtils.show(R.string.msg_password_error);
}else {
ToastUtils.show(R.string.msg_user_error);
}
}
@Override
public void onError(Throwable e) {
AlertDialogUtil.Companion.closeDialog(dialog);
onFailure(e, RxExceptionUtil.exceptionHandler(e));
}
@Override
public void onComplete() {}
});
}
});
}
private void onFailure(Throwable e, String exceptionHandler) {
ToastUtils.show(exceptionHandler);
}
@Override
protected void onDestroy() {
super.onDestroy();
if (dialog !=null){
dialog.dismiss();
dialog = null;
}
}
}
