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

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/*
* Copyright 2010 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 android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.Spinner;
import com.levien.synthesizer.R;
import com.levien.synthesizer.core.model.composite.MultiChannelSynthesizer;
import com.levien.synthesizer.android.widgets.piano.PianoView;
// TODO(klimt): Add the ability to switch channels.
public class MainActivity extends SynthesizerActivity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
piano_ = (PianoView)findViewById(R.id.piano);
presetSpinner_ = (Spinner)findViewById(R.id.presetSpinner);
final Button playButton = (Button)findViewById(R.id.playButton);
final Button recordButton = (Button)findViewById(R.id.recordButton);
playButton.setOnClickListener(new OnClickListener() {
public void onClick(View view) {
if (synthesizer_.getChannel(0).isPlaying()) {
synthesizer_.getChannel(0).stopPlaying();
playButton.setText(R.string.play);
recordButton.setText(R.string.record);
} else {
synthesizer_.getChannel(0).startPlaying();
playButton.setText(R.string.stop);
recordButton.setText(R.string.record);
}
}
});
recordButton.setOnClickListener(new OnClickListener() {
public void onClick(View view) {
if (synthesizer_.getChannel(0).isRecording()) {
synthesizer_.getChannel(0).stopRecording();
playButton.setText(R.string.play);
recordButton.setText(R.string.record);
} else {
synthesizer_.getChannel(0).startRecording();
playButton.setEnabled(true);
playButton.setText(R.string.play);
recordButton.setText(R.string.stop);
}
}
});
presetSpinner_.setOnItemSelectedListener(new OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
if (synthesizer_ == null) {
return;
}
String preset = presetSpinner_.getItemAtPosition(position).toString();
if (!preset.equals("")) {
synthesizer_.getChannel(0).setPreset(preset);
}
}
public void onNothingSelected(AdapterView<?> parent) {
}
});
}
@Override
protected void onSynthesizerUpdate(MultiChannelSynthesizer synth) {
piano_.bindTo(synthesizer_, 0);
ArrayList<String> presetNames = new ArrayList<String>();
presetNames.add("");
synthesizer_.getPresetNames(presetNames);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(
this, android.R.layout.simple_spinner_item, presetNames);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
presetSpinner_.setAdapter(adapter);
}
private PianoView piano_;
private Spinner presetSpinner_;
}