java - 无法与 Android 自定义对话框交互

Question

好吧，请耐心等待，因为我没有那么多地使用自定义对话框(或 Android 编程)，而且我确信我犯了一个愚蠢的初学者错误。

所以我有一个简单的掷骰子应用程序，我试图将其合并到我现有的应用程序中，但我想将其作为一个弹出窗口来实现。到目前为止我找到的解决方案是扩展一个对话框类并使用应用程序中的 xml 作为自定义布局。这实际上显示了预期的输出，但不允许我与之交互(即它在屏幕上显示骰子但我不能掷骰子!)。

我正在调用的 java 类是这样的:

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
    }
}

这是布局 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，我用来创建对话框的调用:

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错误，无论是在编译时还是在运行时，它只是弹出窗口并且不会让我对它做任何事情(除了关闭)!

Answer 1

如果您想要对话之类的东西，我建议您使用带有对话主题的 Activity 。这将允许它像对话框一样“弹出”，但给你更多的灵 active 和更容易操作，恕我直言。创建一个单独的 Activity 以打开并将其添加到您的 Activity list 中

<activity android:theme="@android:style/Theme.Dialog">

Themes

可能有更好的方法来执行此操作，但我认为这可能适合您。