今天要簡單介紹使用自己撰寫的 android library project
./src/com/MyTestLibrary/CountingSensorUpateRate.java
package com.MyTestLibrary; // library package name !!!
import java.util.HashMap;
import java.util.Map;
public class CountingSensorUpateRate {
// 寫一個簡單的 class , 計算 sensor 更新次數
Map<String, Integer> map = new HashMap<String, Integer>();
public int CountAs (String KeyWord){
if(map.containsKey(KeyWord)){
map.put(KeyWord, map.get(KeyWord)+1 );
}else{
map.put(KeyWord, 1 );
}
return map.get(KeyWord);
}
public int GetCounting(String KeyWord){
return map.get(KeyWord);
}
public void Clear(){
map.clear();
}
}
在原本的android application project ，properties > android > library 加入上面新建的 library
修改原本的code 如下：
./src/com/example/test/MainActivity.java
package com.example.test;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import com.MyTestLibrary.CountingSensorUpateRate; // 最重要的一行，引用剛剛新增的 library name "com.MyTestLibrary" , class name "CountingSensorUpdateRate"
public class MainActivity extends ActionBarActivity{
private boolean timerHasStarted = false ;
private Button startB;
private TestCounting CountDownTimer;
private TextView AccelX;
private TextView AccelY;
private TextView AccelZ;
private TextView OrienX;
private TextView OrienY;
private TextView OrienZ;
private SensorActivity MySensor;
private TextView TimeView;
private TextView ElapsedView;
private TextView CountAccel,CountOrien;
private long timeElapsed;
private long startTime = 50*1000;
private long interval = 1*1000; // 1 sec. per time interval
private CountingSensorUpateRate MyCountingSensorUpdateRate; //宣告 CountingSensorUpdateRate
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
startB = (Button) this.findViewById(R.id.button1);
startB.setOnClickListener(new Button_Listener(this));
AccelX = (TextView) this.findViewById(R.id.AccelX);
AccelY = (TextView) this.findViewById(R.id.AccelY);
AccelZ = (TextView) this.findViewById(R.id.AccelZ);
OrienX = (TextView) this.findViewById(R.id.OrienX);
OrienY = (TextView) this.findViewById(R.id.OrienY);
OrienZ = (TextView) this.findViewById(R.id.OrienZ);
TimeView= (TextView) this.findViewById(R.id.timer);
ElapsedView= (TextView) this.findViewById(R.id.timeElapsed);
CountAccel = (TextView) this.findViewById(R.id.UpateRate_Accel);
CountOrien = (TextView) this.findViewById(R.id.UpateRate_Orien);
CountDownTimer = new TestCounting (startTime,interval);
MyCountingSensorUpdateRate = new CountingSensorUpateRate(); // 新建一個 Counting object
MySensor = new SensorActivity();
MySensor.onPause(); //預設啟動時停止
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
class Button_Listener implements OnClickListener {
public Button_Listener(MainActivity activity) {
}
@Override
public void onClick(View view) {
if(!timerHasStarted){
CountDownTimer.start();
MySensor.onResume();
timerHasStarted = true;
startB.setText("RESET ME!");
}else{
CountDownTimer.cancel();
MySensor.onPause();
timerHasStarted = false;
startB.setText("Start Counting... 50 Sec.");
}
}
}
public class TestCounting extends CountDownTimer{
public TestCounting(long startTime, long interval) {
super(startTime, interval);
}
@Override
public void onFinish(){
TimeView.setText("Time's Up");
ElapsedView.setText("Time Elapsed:" + String.valueOf(startTime));
// 在倒數計時結束時，顯示所有的計算結果，並清空計數器
CountAccel.setText("Upate Accel "+ MyCountingSensorUpdateRate.GetCounting("TYPE_ACCELEROMETER") +" Times per "+startTime+" ms");
CountOrien.setText("Upate Orien "+ MyCountingSensorUpdateRate.GetCounting("TYPE_ORIENTATION") +" Times per "+startTime+" ms");
MyCountingSensorUpdateRate.Clear();
MySensor.onPause();
}
@Override
public void onTick(long millisUntillFinished){
TimeView.setText("Time remain : "+ millisUntillFinished);
timeElapsed = startTime - millisUntillFinished;
ElapsedView.setText("Time Elapsed : " + String.valueOf(timeElapsed));
}
}
public class SensorActivity implements SensorEventListener {
private SensorManager mSensorManager;
public SensorActivity() {
mSensorManager = (SensorManager)getSystemService(SENSOR_SERVICE);
}
@SuppressWarnings("deprecation")
protected void onResume() {
mSensorManager.registerListener(this, mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER) , SensorManager.SENSOR_DELAY_NORMAL);
mSensorManager.registerListener(this, mSensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION) , SensorManager.SENSOR_DELAY_NORMAL);
}
protected void onPause() {
mSensorManager.unregisterListener(this);
}
public void onAccuracyChanged(Sensor sensor, int accuracy) {
}
@SuppressWarnings("deprecation")
public void onSensorChanged(SensorEvent event) {
switch(event.sensor.getType()){
case Sensor.TYPE_ACCELEROMETER :
// 藉由指定關鍵字，更新對應的計數器數值
MyCountingSensorUpdateRate.CountAs("TYPE_ACCELEROMETER");
float X = event.values[0];
float Y = event.values[1];
float Z = event.values[2];
AccelX.setText("X : " + String.valueOf(X));
AccelY.setText("Y : " + String.valueOf(Y));
AccelZ.setText("Z : " + String.valueOf(Z));
break;
case Sensor.TYPE_ORIENTATION :
MyCountingSensorUpdateRate.CountAs("TYPE_ORIENTATION");
float Z_Yaw = event.values[0];
float X_Pitch = event.values[1];
float Y_Roll = event.values[2];
OrienX.setText("X_Pitch : " + String.valueOf(X_Pitch));
OrienY.setText("Y_Roll : " + String.valueOf(Y_Roll));
OrienZ.setText("Z_Yaw : " + String.valueOf(Z_Yaw));
break;
}
}
}
}
./res/layout/activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.test.MainActivity" >
<TextView
android:id="@+id/timer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:text="@string/Time" />
<!-- Call Resource String,
需要到./res/values/strings.xml
建立 Name => Value 對照
-->
<TextView
android:id="@+id/timeElapsed"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/timer"
android:layout_below="@+id/timer"
android:text="@string/Time_elasped" />
<TextView
android:id="@+id/Accel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/button1"
android:layout_below="@+id/button1"
android:text="加速度計：" />
<TextView
android:id="@+id/AccelX"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/button1"
android:layout_below="@+id/Accel"
android:text="X" />
<TextView
android:id="@+id/AccelY"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/AccelX"
android:layout_below="@+id/AccelX"
android:text="Y" />
<TextView
android:id="@+id/AccelZ"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/AccelY"
android:layout_below="@+id/AccelY"
android:text="Z" />
<TextView
android:id="@+id/Orien"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/button1"
android:layout_below="@+id/AccelZ"
android:text="方位計：" />
<TextView
android:id="@+id/OrienX"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/button1"
android:layout_below="@+id/Orien"
android:text="X" />
<TextView
android:id="@+id/OrienY"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/AccelX"
android:layout_below="@+id/OrienX"
android:text="Y" />
<TextView
android:id="@+id/OrienZ"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/AccelY"
android:layout_below="@+id/OrienY"
android:text="Z" />
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/timeElapsed"
android:layout_below="@+id/timeElapsed"
android:text="Start Counting... 50 Sec." />
<!-- Hardcode string 方式 -->
<!-- 以下是今天新增的部分，拿來填寫計數器結果-->
<TextView
android:id="@+id/UpateRate_Accel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/OrienZ"
android:layout_below="@+id/OrienZ"
android:text="" />
<TextView
android:id="@+id/UpateRate_Orien"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/OrienZ"
android:layout_below="@+id/UpateRate_Accel"
android:text="" />
</RelativeLayout>
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