最終更新:
moonlight_aska 2017年10月29日(日) 00:57:01履歴
- ButtonActivity.java
- GIPIピンや割り当てるキーコードを指定して, ButtonInputDeviceクラスのインスタンスを生成する.
- ButtonInputDevice#registerメソッドで, 登録する.
- キーイベントのコールバック関数で, キー入力を処理する.
- ButtonInputDevice#unregisterメソッドで, 登録を解除する.
- ButtonInputDevice#closeメソッドで, デバイスをクローズする.
package com.moonlight_aska.androidthings.button;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.KeyEvent;
import com.google.android.things.contrib.driver.button.Button;
import com.google.android.things.contrib.driver.button.ButtonInputDriver;
import java.io.IOException;
public class ButtonActivity extends Activity {
private final static String TAG = "ButtonActivity";
private final static String BTN_GPIO_PIN = "BCM21";
private ButtonInputDriver mBtnInpDriver;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
try {
// GPIO入力をSPACEキーに割り当て
mBtnInpDriver = new ButtonInputDriver(BTN_GPIO_PIN,
Button.LogicState.PRESSED_WHEN_LOW, KeyEvent.KEYCODE_SPACE);
mBtnInpDriver.register();
} catch (IOException e) {
Log.e(TAG, "Error on ButtonInputDriver API", e);
}
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_SPACE) {
Log.d(TAG, "SPACE Key Down.");
return true;
}
return super.onKeyDown(keyCode, event);
}
@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_SPACE) {
Log.d(TAG, "SPACE Key Up.");
}
return super.onKeyUp(keyCode, event);
}
@Override
protected void onDestroy() {
super.onDestroy();
if (mBtnInpDriver != null) {
// キーへの割り当て解除
mBtnInpDriver.unregister();
try {
mBtnInpDriver.close();
} catch (IOException e) {
Log.e(TAG, "Error on ButtonInputDriver API", e);
} finally {
mBtnInpDriver = null;
}
}
}
}
- AndroidManifest.xml
- uses-permissionタグで, "com.google.android.things.permission.MANAGE_INPUT_DRIVERS"を設定する.
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.moonlight_aska.androidthings.button">
<uses-permission android:name="com.google.android.things.permission.MANAGE_INPUT_DRIVERS" />
<application android:label="@string/app_name" >
<uses-library android:name="com.google.android.things"/>
<activity android:name=".ButtonActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<!-- Launch activity automatically on boot -->
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.IOT_LAUNCHER"/>
<category android:name="android.intent.category.DEFAULT"/>
</intent-filter>
</activity>
</application>
</manifest>
- build.gradle
- dependenciesに'com.google.android.things.contrib:driver-button:0.3'を追加する.
apply plugin: 'com.android.application'
android {
compileSdkVersion 26
buildToolsVersion "26.0.2"
defaultConfig {
applicationId "com.moonlight_aska.androidthings.button"
minSdkVersion 25
targetSdkVersion 26
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
testCompile 'junit:junit:4.12'
compile 'com.google.android.things.contrib:driver-button:0.3'
provided 'com.google.android.things:androidthings:0.5.1-devpreview'
}
- 動作例

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