好的，请您耐心等待，因为我并没有太多使用自定义对话框（或者说 Android 编程）的经验，我确定我可能犯了一些初学者的错误。
所以，我有一个简单的掷骰子应用程序，我正在尝试将其合并到我的现有应用程序中，但我希望它以弹出窗口的形式显示。目前找到的解决方案是扩展对话框类并使用应用程序的 XML 作为自定义布局。这实际上显示了预期的输出，但不允许我与其进行交互（即它在屏幕上显示了骰子，但我无法掷它们！）。
我调用的 Java 类如下：
import java.io.IOException;
import java.util.Random;
import com.zeldar.scanner.R;
import android.app.Activity;
import android.content.res.Resources;
import android.graphics.drawable.Drawable;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageView;
import android.widget.LinearLayout;
public class RollDice extends Activity implements SensorEventListener {
private final int rollAnimations = 50;
private final int delayTime = 15;
private Resources res;
private final int[] diceImages = new int[] { R.drawable.d1, R.drawable.d2, R.drawable.d3, R.drawable.d4, R.drawable.d5, R.drawable.d6 };
private Drawable dice[] = new Drawable[6];
private final Random randomGen = new Random();
@SuppressWarnings("unused")
private int diceSum;
private int roll[] = new int[] { 6, 6 };
private ImageView die1;
private ImageView die2;
private LinearLayout diceContainer;
private SensorManager sensorMgr;
private Handler animationHandler;
private long lastUpdate = -1;
private float x, y, z;
private float last_x, last_y, last_z;
private boolean paused = false;
private static final int UPDATE_DELAY = 50;
private static final int SHAKE_THRESHOLD = 400;
@Override
public void onCreate(Bundle savedInstanceState) {
paused = false;
super.onCreate(savedInstanceState);
setContentView(R.layout.dice);
setTitle(getString(R.string.app_name));
res = getResources();
for (int i = 0; i < 6; i++) {
dice[i] = res.getDrawable(diceImages[i]);
}
diceContainer = (LinearLayout) findViewById(R.id.diceContainer);
diceContainer.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
try {
rollDice();
} catch (Exception e) {};
}
});
die1 = (ImageView) findViewById(R.id.die1);
die2 = (ImageView) findViewById(R.id.die2);
animationHandler = new Handler() {
public void handleMessage(Message msg) {
die1.setImageDrawable(dice[roll[0]]);
die2.setImageDrawable(dice[roll[1]]);
}
};
sensorMgr = (SensorManager) getSystemService(SENSOR_SERVICE);
boolean accelSupported = sensorMgr.registerListener(this,
sensorMgr.getDefaultSensor(SensorManager.SENSOR_ACCELEROMETER), SensorManager.SENSOR_DELAY_GAME);
if (!accelSupported) sensorMgr.unregisterListener(this); //no accelerometer on the device
rollDice();
}
private void rollDice() {
if (paused) return;
new Thread(new Runnable() {
@Override
public void run() {
for (int i = 0; i < rollAnimations; i++) {
doRoll();
}
}
}).start();
MediaPlayer mp = MediaPlayer.create(this, R.raw.roll);
try {
mp.prepare();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
mp.start();
}
private void doRoll() { // only does a single roll
roll[0] = randomGen.nextInt(6);
roll[1] = randomGen.nextInt(6);
diceSum = roll[0] + roll[1] + 2; // 2 is added because the values of the rolls start with 0 not 1
synchronized (getLayoutInflater()) {
animationHandler.sendEmptyMessage(0);
}
try { // delay to alloy for smooth animation
Thread.sleep(delayTime);
} catch (final InterruptedException e) {
e.printStackTrace();
}
}
public void onResume() {
super.onResume();
paused = false;
}
public void onPause() {
super.onPause();
paused = true;
}
@Override
public void onSensorChanged(SensorEvent event) {
Sensor mySensor = event.sensor;
if (mySensor.getType() == SensorManager.SENSOR_ACCELEROMETER) {
long curTime = System.currentTimeMillis();
if ((curTime - lastUpdate) > UPDATE_DELAY) {
long diffTime = (curTime - lastUpdate);
lastUpdate = curTime;
x = event.values[SensorManager.DATA_X];
y = event.values[SensorManager.DATA_Y];
z = event.values[SensorManager.DATA_Z];
float speed = Math.abs(x + y + z - last_x - last_y - last_z) / diffTime * 10000;
if (speed > SHAKE_THRESHOLD) { //the screen was shaked
rollDice();
}
last_x = x;
last_y = y;
last_z = z;
}
}
}
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
return; //this method isn't used
}
}
以下是布局 xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/diceContainer"
android:orientation="vertical"
android:gravity="center"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="10dp" >
<ImageView
android:id="@+id/die1"
android:src="@drawable/d6"
android:layout_width="150dp"
android:layout_height="150dp"
android:layout_marginBottom="15dp"
android:contentDescription="@string/content_dice" />
<ImageView
android:id="@+id/die2"
android:src="@drawable/d6"
android:layout_width="150dp"
android:layout_height="150dp"
android:contentDescription="@string/content_dice" />
</LinearLayout>
最后，我使用的调用来创建对话框：
private Dialog rollDice;
rollDice = new Dialog(ScanActivity.this);
rollDice.setContentView(R.layout.dice);
rollDice.setTitle("Roll Dice");
rollDice.setCancelable(true);
rollDice.show();
澄清一下：最令人困惑的部分是，我没有收到任何错误信息，在编译或运行时都没有，只是弹出一个窗口，不让我对其进行任何操作（除了关闭）！