InitializationProvider.java
/*
* Copyright 2020 The Android Open Source Project
*
* 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 androidx.startup;
import android.app.Application;
import android.content.ContentProvider;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
/**
* The {@link ContentProvider} which discovers {@link Initializer}s in an application and
* initializes them before {@link Application#onCreate()}.
*/
public class InitializationProvider extends ContentProvider {
@Override
public final boolean onCreate() {
Context context = getContext();
if (context != null) {
AppInitializer.getInstance(context).discoverAndInitialize();
} else {
throw new StartupException("Context cannot be null");
}
return true;
}
@Nullable
@Override
public final Cursor query(
@NonNull Uri uri,
@Nullable String[] projection,
@Nullable String selection,
@Nullable String[] selectionArgs,
@Nullable String sortOrder) {
throw new IllegalStateException("Not allowed.");
}
@Nullable
@Override
public final String getType(@NonNull Uri uri) {
throw new IllegalStateException("Not allowed.");
}
@Nullable
@Override
public final Uri insert(@NonNull Uri uri, @Nullable ContentValues values) {
throw new IllegalStateException("Not allowed.");
}
@Override
public final int delete(
@NonNull Uri uri,
@Nullable String selection,
@Nullable String[] selectionArgs) {
throw new IllegalStateException("Not allowed.");
}
@Override
public final int update(
@NonNull Uri uri,
@Nullable ContentValues values,
@Nullable String selection,
@Nullable String[] selectionArgs) {
throw new IllegalStateException("Not allowed.");
}
}