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music-synthesizer-for-android/android/src/com/levien/synthesizer/android/ui/InstrumentListActivity.java

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2.8 KiB

/*
* Copyright 2012 Google Inc.
*
* 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.levien.synthesizer.android.ui;
import java.util.ArrayList;
import com.levien.synthesizer.core.model.composite.MultiChannelSynthesizer;
import com.levien.synthesizer.android.service.SynthesizerService;
import android.app.ListActivity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.IBinder;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
/**
* An activity that shows the list of available presets (aka instruments), and let's the user click
* on one of them to begin editing it.
*/
public class InstrumentListActivity extends ListActivity {
@Override
protected void onStart() {
super.onStart();
bindService(new Intent(this, SynthesizerService.class),
synthesizerConnection_, Context.BIND_AUTO_CREATE);
}
@Override
protected void onStop() {
super.onStop();
unbindService(synthesizerConnection_);
}
@Override
protected void onListItemClick(ListView list, View view, int position, long id) {
this.startActivity(new Intent(null,
SynthesizerActivity.makeUri(position),
this,
EditInstrumentActivity.class));
}
private ServiceConnection synthesizerConnection_ = new ServiceConnection() {
public void onServiceConnected(ComponentName className, IBinder service) {
MultiChannelSynthesizer synthesizer =
((SynthesizerService.LocalBinder)service).getSynthesizer();
ArrayList<String> presets = new ArrayList<String>();
synthesizer.getPresetNames(presets);
final ArrayAdapter<String> adapter = new ArrayAdapter<String>(
InstrumentListActivity.this,
android.R.layout.simple_list_item_1,
presets.toArray(new String[0]));
InstrumentListActivity.this.runOnUiThread(new Runnable() {
public void run() {
InstrumentListActivity.this.setListAdapter(adapter);
InstrumentListActivity.this.getListView().invalidate();
}
});
}
public void onServiceDisconnected(ComponentName className) {
}
};
}