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Merge "Improve GameControllerInput demo with input device listeners."

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This commit is contained in:
Jeff Brown
2012-04-13 17:02:57 -07:00
committed by Android (Google) Code Review
parent 6c5e9eb650 a4920b722d
commit edfcc032c3
1 changed files with 69 additions and 12 deletions
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81
samples/ApiDemos/src/com/example/android/apis/view/GameControllerInput.java
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@@ -21,13 +21,12 @@ import com.example.android.apis.R;
import android.app.Activity;
import android.content.Context;
import android.content.res.Resources;
import android.hardware.input.InputManager;
import android.os.Bundle;
import android.util.AttributeSet;
import android.util.Log;
import android.util.SparseArray;
import android.util.SparseIntArray;
import android.view.InputDevice;
import android.view.InputEvent;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.MotionEvent;
@@ -42,11 +41,11 @@ import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.atomic.AtomicLong;
/**
* Demonstrates how to process input events received from game controllers.
* It also shows how to detect when input devices are added, removed or reconfigured.
*
* This activity displays button states and joystick positions.
* Also writes detailed information about relevant input events to the log.
@@ -54,9 +53,11 @@ import java.util.concurrent.atomic.AtomicLong;
* The game controller is also uses to control a very simple game. See {@link GameView}
* for the game itself.
*/
public class GameControllerInput extends Activity {
public class GameControllerInput extends Activity
implements InputManager.InputDeviceListener {
private static final String TAG = "GameControllerInput";
private InputManager mInputManager;
private SparseArray<InputDeviceState> mInputDeviceStates;
private GameView mGame;
private ListView mSummaryList;
@@ -66,6 +67,8 @@ public class GameControllerInput extends Activity {
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mInputManager = (InputManager)getSystemService(Context.INPUT_SERVICE);
mInputDeviceStates = new SparseArray<InputDeviceState>();
mSummaryAdapter = new SummaryAdapter(this, getResources());
@@ -83,6 +86,30 @@ public class GameControllerInput extends Activity {
});
}
@Override
protected void onResume() {
super.onResume();
// Register an input device listener to watch when input devices are
// added, removed or reconfigured.
mInputManager.registerInputDeviceListener(this, null);
// Query all input devices.
// We do this so that we can see them in the log as they are enumerated.
int[] ids = mInputManager.getInputDeviceIds();
for (int i = 0; i < ids.length; i++) {
getInputDeviceState(ids[i]);
}
}
@Override
protected void onPause() {
super.onPause();
// Remove the input device listener when the activity is paused.
mInputManager.unregisterInputDeviceListener(this);
}
@Override
public void onWindowFocusChanged(boolean hasFocus) {
super.onWindowFocusChanged(hasFocus);
@@ -93,7 +120,7 @@ public class GameControllerInput extends Activity {
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
// Update device state for visualization and logging.
InputDeviceState state = getInputDeviceState(event);
InputDeviceState state = getInputDeviceState(event.getDeviceId());
if (state != null) {
switch (event.getAction()) {
case KeyEvent.ACTION_DOWN:
@@ -115,10 +142,10 @@ public class GameControllerInput extends Activity {
public boolean dispatchGenericMotionEvent(MotionEvent event) {
// Check that the event came from a joystick since a generic motion event
// could be almost anything.
if ((event.getSource() & InputDevice.SOURCE_CLASS_JOYSTICK) != 0
if (isJoystick(event.getSource())
&& event.getAction() == MotionEvent.ACTION_MOVE) {
// Update device state for visualization and logging.
InputDeviceState state = getInputDeviceState(event);
InputDeviceState state = getInputDeviceState(event.getDeviceId());
if (state != null && state.onJoystickMotion(event)) {
mSummaryAdapter.show(state);
}
@@ -126,22 +153,52 @@ public class GameControllerInput extends Activity {
return super.dispatchGenericMotionEvent(event);
}
private InputDeviceState getInputDeviceState(InputEvent event) {
final int deviceId = event.getDeviceId();
private InputDeviceState getInputDeviceState(int deviceId) {
InputDeviceState state = mInputDeviceStates.get(deviceId);
if (state == null) {
final InputDevice device = event.getDevice();
final InputDevice device = mInputManager.getInputDevice(deviceId);
if (device == null) {
return null;
}
state = new InputDeviceState(device);
mInputDeviceStates.put(deviceId, state);
Log.i(TAG, device.toString());
Log.i(TAG, "Device enumerated: " + state.mDevice);
}
return state;
}
// Implementation of InputManager.InputDeviceListener.onInputDeviceAdded()
@Override
public void onInputDeviceAdded(int deviceId) {
InputDeviceState state = getInputDeviceState(deviceId);
Log.i(TAG, "Device added: " + state.mDevice);
}
// Implementation of InputManager.InputDeviceListener.onInputDeviceChanged()
@Override
public void onInputDeviceChanged(int deviceId) {
InputDeviceState state = mInputDeviceStates.get(deviceId);
if (state != null) {
mInputDeviceStates.remove(deviceId);
state = getInputDeviceState(deviceId);
Log.i(TAG, "Device changed: " + state.mDevice);
}
}
// Implementation of InputManager.InputDeviceListener.onInputDeviceRemoved()
@Override
public void onInputDeviceRemoved(int deviceId) {
InputDeviceState state = mInputDeviceStates.get(deviceId);
if (state != null) {
Log.i(TAG, "Device removed: " + state.mDevice);
mInputDeviceStates.remove(deviceId);
}
}
private static boolean isJoystick(int source) {
return (source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0;
}
/**
* Tracks the state of joystick axes and game controller buttons for a particular
* input device for diagnostic purposes.