511b5fe9f2
Make sure setSliceUri is invoked even when it is null, where we create SliceLiveData. Then in lifecycle, if LiveData is not null, we will register observer. Bug: 120803703 Test: Manual Change-Id: I56caf2abf04c4a251ebafa5deb599d44b1c7fe92
90 lines
2.7 KiB
Java
90 lines
2.7 KiB
Java
/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings.slices;
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import android.content.Context;
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import android.net.Uri;
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import androidx.annotation.VisibleForTesting;
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import androidx.lifecycle.LiveData;
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import androidx.lifecycle.Observer;
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import androidx.preference.PreferenceScreen;
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import androidx.slice.Slice;
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import androidx.slice.widget.SliceLiveData;
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import androidx.slice.widget.SliceView;
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import com.android.settings.core.BasePreferenceController;
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import com.android.settingslib.core.lifecycle.LifecycleObserver;
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import com.android.settingslib.core.lifecycle.events.OnStart;
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import com.android.settingslib.core.lifecycle.events.OnStop;
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/**
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* Default {@link BasePreferenceController} for {@link SliceView}. It will take {@link Uri} for
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* Slice and display what's inside this {@link Uri}
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*/
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public class SlicePreferenceController extends BasePreferenceController implements
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LifecycleObserver, OnStart, OnStop, Observer<Slice> {
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@VisibleForTesting
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LiveData<Slice> mLiveData;
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private SlicePreference mSlicePreference;
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private Uri mUri;
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public SlicePreferenceController(Context context, String preferenceKey) {
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super(context, preferenceKey);
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}
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@Override
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public void displayPreference(PreferenceScreen screen) {
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super.displayPreference(screen);
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mSlicePreference = screen.findPreference(getPreferenceKey());
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}
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@Override
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public int getAvailabilityStatus() {
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return mUri != null ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
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}
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public void setSliceUri(Uri uri) {
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mUri = uri;
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mLiveData = SliceLiveData.fromUri(mContext, mUri);
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//TODO(b/120803703): figure out why we need to remove observer first
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mLiveData.removeObserver(this);
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}
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@Override
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public void onStart() {
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if (mLiveData != null) {
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mLiveData.observeForever(this);
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}
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}
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@Override
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public void onStop() {
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if (mLiveData != null) {
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mLiveData.removeObserver(this);
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}
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}
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@Override
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public void onChanged(Slice slice) {
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if (slice != null) {
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mSlicePreference.onSliceUpdated(slice);
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}
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}
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}
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