Java tutorial
/* * Copyright (c) 2018 dmfs GmbH * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.smoothsync.smoothsetup.microfragments; import android.content.Context; import android.content.Intent; import android.os.Parcel; import android.support.annotation.NonNull; import android.support.v4.app.Fragment; import com.smoothsync.smoothsetup.services.WizardService; import com.smoothsync.smoothsetup.utils.LoadingFragment; import com.smoothsync.smoothsetup.utils.StringMeta; import org.dmfs.android.bolts.service.elementary.FutureLocalServiceConnection; import org.dmfs.android.microfragments.MicroFragment; import org.dmfs.android.microfragments.MicroFragmentHost; import org.dmfs.android.microfragments.transitions.ForwardResetTransition; import org.dmfs.android.microfragments.transitions.ForwardTransition; /** * A {@link MicroFragment} to load a wizard. * * @author Marten Gajda */ public final class InitWizardMicroFragment implements MicroFragment<InitWizardMicroFragment.Params> { public final static Creator<InitWizardMicroFragment> CREATOR = new Creator<InitWizardMicroFragment>() { @Override public InitWizardMicroFragment createFromParcel(Parcel source) { return new InitWizardMicroFragment(source.readString(), source.readParcelable(getClass().getClassLoader())); } @Override public InitWizardMicroFragment[] newArray(int size) { return new InitWizardMicroFragment[size]; } }; interface Params { String metaKey(); Intent intent(); } private final String mWizardServiceMetaKey; private final Intent mIntent; public InitWizardMicroFragment(String wizardServiceMetaKey, Intent intent) { mWizardServiceMetaKey = wizardServiceMetaKey; mIntent = intent; } @NonNull @Override public String title(@NonNull Context context) { // this step should be fairly quick, showing a title for a few milliseconds could lead to disturbing UI glitches return ""; } @Override public boolean skipOnBack() { return true; } @NonNull @Override public Fragment fragment(@NonNull Context context, @NonNull MicroFragmentHost host) { return new LoadWizardFragment(); } @NonNull @Override public Params parameter() { return new Params() { @Override public String metaKey() { return mWizardServiceMetaKey; } @Override public Intent intent() { return mIntent; } }; } @Override public int describeContents() { return 0; } @Override public void writeToParcel(Parcel dest, int flags) { dest.writeString(mWizardServiceMetaKey); dest.writeParcelable(mIntent, flags); } public final static class LoadWizardFragment extends LoadingFragment<Params, MicroFragment<?>> { public LoadWizardFragment() { super((context, env) -> new FutureLocalServiceConnection<WizardService>(context, new Intent(new StringMeta(context, env.microFragment().parameter().metaKey()).value()) .setPackage(context.getPackageName())).service(1000).initialMicroFragment( context, env.microFragment().parameter().intent()), microFragmentAsyncTaskResult -> { try { return new ForwardTransition<>(microFragmentAsyncTaskResult.value()); } catch (Exception e) { return new ForwardResetTransition<>( new ErrorRetryMicroFragment("Unexpected Exception:\n\n" + e.getMessage())); } }); } } }