Add Trigger Sensor API Demo.

Add sensor API demo for significant motion sensor. Change-Id: I9d55fef52bdda2b804003bb07d6d977f13cda5b0
2013-02-28 20:35:27 -08:00
parent dafe2546c9
commit 50435d3e6f
4 changed files with 159 additions and 0 deletions
--- a/samples/ApiDemos/src/com/example/android/apis/os/TriggerSensors.java
+++ b/samples/ApiDemos/src/com/example/android/apis/os/TriggerSensors.java
@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) 2013 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 com.example.android.apis.os;
+
+import android.app.Activity;
+import android.content.Context;
+import android.view.View;
+import android.hardware.Sensor;
+import android.hardware.TriggerEvent;
+import android.hardware.TriggerEventListener;
+import android.hardware.SensorManager;
+import android.os.Bundle;
+import android.widget.TextView;
+import com.example.android.apis.R;
+
+/**
+ * <h3>Application showing the Trigger Sensor API for the Significant Motion sensor. </h3>
+
+<p>This demonstrates the {@link android.hardware.SensorManager android.hardware.SensorManager
+   android.hardware.TriggerEventListener} class.
+
+<h4>Demo</h4>
+OS / TriggerSensors
+
+<h4>Source files</h4>
+ * <table class="LinkTable">
+ *         <tr>
+ *             <td >src/com.example.android.apis/os/TriggerSensors.java</td>
+ *             <td >TriggerSensors</td>
+ *         </tr>
+ * </table>
+ */
+
+
+class TriggerListener extends TriggerEventListener {
+    private Context mContext;
+    private TextView mTextView;
+
+    TriggerListener(Context context, TextView textView) {
+        mContext = context;
+        mTextView = textView;
+    }
+
+    @Override
+    public void onTrigger(TriggerEvent event) {
+        if (event.values[0] == 1) {
+            mTextView.append(mContext.getString(R.string.sig_motion) + "\n");
+            mTextView.append(mContext.getString(R.string.sig_motion_auto_disabled) + "\n");
+        }
+        // Sensor is auto disabled.
+    }
+}
+
+public class TriggerSensors extends Activity {
+    private SensorManager mSensorManager;
+    private Sensor mSigMotion;
+    private TriggerListener mListener;
+    private TextView mTextView;
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+        if (mSigMotion != null && mSensorManager.requestTriggerSensor(mListener, mSigMotion))
+                mTextView.append(getString(R.string.sig_motion_enabled) + "\n");
+    }
+
+    @Override
+    protected void onPause() {
+        super.onPause();
+        // Call disable only if needed for cleanup.
+        // The sensor is auto disabled when triggered.
+        if (mSigMotion != null) mSensorManager.cancelTriggerSensor(mListener, mSigMotion);
+    }
+
+
+    /**
+     * Initialization of the Activity after it is first created.  Must at least
+     * call {@link android.app.Activity#setContentView setContentView()} to
+     * describe what is to be displayed in the screen.
+     */
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.trigger_sensors);
+        mSensorManager = (SensorManager)getSystemService(SENSOR_SERVICE);
+        mSigMotion = mSensorManager.getDefaultSensor(Sensor.TYPE_SIGNIFICANT_MOTION);
+        mTextView = (TextView)findViewById(R.id.text);
+        mListener = new TriggerListener(this, mTextView);
+        if (mSigMotion == null) {
+            mTextView.append(getString(R.string.no_sig_motion) + "\n");
+        }
+    }
+
+    @Override
+    protected void onStop() {
+        if (mSigMotion != null) mSensorManager.cancelTriggerSensor(mListener, mSigMotion);
+        super.onStop();
+    }
+}