Friday, December 13, 2013
Wednesday, December 11, 2013
android proximity sensor
download: http://www.mediafire.com/download/83nnqx9cnhw5nsv/AndroidProximitySensor_110920a.zip
another
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another
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01 | import android.app.Activity; |
02 | import android.hardware.Sensor; |
03 | import android.hardware.SensorEvent; |
04 | import android.hardware.SensorEventListener; |
05 | import android.hardware.SensorManager; |
06 | import android.os.Bundle; |
07 | import android.widget.ImageView; |
08 |
09 | public class SensorActivity extends Activity implements SensorEventListener { |
10 | private SensorManager mSensorManager; |
11 | private Sensor mSensor; |
12 | ImageView iv; |
13 |
14 | @Override |
15 | protected void onCreate(Bundle savedInstanceState) { |
16 | // TODO Auto-generated method stub |
17 | super.onCreate(savedInstanceState); |
18 | setContentView(R.layout.sensor_screen); |
19 | mSensorManager = (SensorManager) getSystemService(SENSOR_SERVICE); |
20 | mSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_PROXIMITY); |
21 | iv = (ImageView) findViewById(R.id.imageView1); |
22 | } |
23 |
24 | protected void onResume() { |
25 | super.onResume(); |
26 | mSensorManager.registerListener(this, mSensor, |
27 | SensorManager.SENSOR_DELAY_NORMAL); |
28 | } |
29 |
30 | protected void onPause() { |
31 | super.onPause(); |
32 | mSensorManager.unregisterListener(this); |
33 | } |
34 |
35 | public void onAccuracyChanged(Sensor sensor, int accuracy) { |
36 | } |
37 |
38 | public void onSensorChanged(SensorEvent event) { |
39 | if (event.values[0] == 0) { |
40 | iv.setImageResource(R.drawable.near); |
41 | } else { |
42 | iv.setImageResource(R.drawable.far); |
43 | } |
44 | } |
45 | } |
Tuesday, December 10, 2013
Thursday, December 5, 2013
Sunday, December 1, 2013
get display density in android
DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);
switch (metrics.densityDpi) {
case DisplayMetrics.DENSITY_LOW:
break;
case DisplayMetrics.DENSITY_MEDIUM:
break;
case DisplayMetrics.DENSITY_HIGH:
PASSED_DISTANCE = 200;
break;
}
getWindowManager().getDefaultDisplay().getMetrics(metrics);
switch (metrics.densityDpi) {
case DisplayMetrics.DENSITY_LOW:
break;
case DisplayMetrics.DENSITY_MEDIUM:
break;
case DisplayMetrics.DENSITY_HIGH:
PASSED_DISTANCE = 200;
break;
}
android multitouch or touch 2 button at a time by multitouch
download: http://www.mediafire.com/download/3obheaff1ut7sgl/MultiTouchHandler.zip
import android.app.Activity;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Button;
import android.widget.RelativeLayout;
import android.widget.TextView;
public class MainActivity extends Activity {
Button button1, button2 ;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button1 = (Button)findViewById(R.id.button1);
button2 = (Button)findViewById(R.id.button2);
RelativeLayout myLayout = (RelativeLayout) findViewById(R.id.rl1);
button1.setOnTouchListener(new RelativeLayout.OnTouchListener() {
public boolean onTouch(View v, MotionEvent m) {
handleTouch(m);
return true;
}
});
button2.setOnTouchListener(new RelativeLayout.OnTouchListener() {
public boolean onTouch(View v, MotionEvent m) {
handleTouch(m);
return true;
}
});
}
void handleTouch(MotionEvent m)
{
int pointerCount = m.getPointerCount();
for (int i = 0; i < pointerCount; i++)
{
int x = (int) m.getX(i);
int y = (int) m.getY(i);
int id = m.getPointerId(i);
int action = m.getActionMasked();
int actionIndex = m.getActionIndex();
String actionString;
switch (action)
{
case MotionEvent.ACTION_DOWN:
actionString = "DOWN";
break;
case MotionEvent.ACTION_UP:
actionString = "UP";
break;
case MotionEvent.ACTION_POINTER_DOWN:
actionString = "PNTR DOWN";
break;
case MotionEvent.ACTION_POINTER_UP:
actionString = "PNTR UP";
break;
case MotionEvent.ACTION_MOVE:
actionString = "MOVE";
break;
default:
actionString = "";
}
String touchStatus = "Action: " + actionString + " Index: " + actionIndex + " ID: " + id + " X: " + x + " Y: " + y+ " pointerCount="+pointerCount;
if (pointerCount == 1)
button1.setText(touchStatus);
else
button2.setText(touchStatus);
}
}
}
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