-1

我得到了开关和新的布局，谢谢大家。最后一个问题。如果用户按下返回或主页按钮，我希望音乐停止播放。这是代码，我不知道我错过了什么。

package com.androidsleepmachine.gamble;

import android.app.Activity;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.Spinner;

public class Ocean extends Activity implements View.OnClickListener {
 public static final Integer[] TIME_IN_MINUTES = { 30, 45, 60, 180, 360 };
public MediaPlayer mediaPlayer;
public Handler handler = new Handler();
public Button button1;
public Spinner spinner1;

// Initialize the activity
@Override
public void onCreate(Bundle bundle) {
    super.onCreate(bundle);
    setContentView(R.layout.ocean);

    button1 = (Button) findViewById(R.id.btn1);
    button1.setOnClickListener(this);
    spinner1 = (Spinner) findViewById(R.id.spinner1);
    ArrayAdapter<Integer> adapter = new ArrayAdapter<Integer>(this,  
android.R.layout.simple_spinner_item, TIME_IN_MINUTES);          
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);          
    spinner1.setAdapter(adapter); 
}

// Play the sound and start the timer
private void playSound(int resourceId) {
    // Cleanup any previous sound files
    cleanup();
    // Create a new media player instance and start it
    mediaPlayer = MediaPlayer.create(this, resourceId);
    mediaPlayer.start();
    // Create the timer to stop the sound after x number of milliseconds
    int selectedTime = TIME_IN_MINUTES[spinner1.getSelectedItemPosition()];
    handler.postDelayed(runnable, selectedTime * 60 * 1000);
}

// Handle button callback
@Override
public void onClick(View v) {
    switch (v.getId()) {
        case R.id.btn1:
            playSound(R.raw.ocean_birds);
            break;
    }
}

// Stop the sound and cleanup the media player
public void cleanup() {
    if (mediaPlayer != null) {
        mediaPlayer.stop();
        mediaPlayer.release();
        mediaPlayer = null;
    }
    // Cancel any previously running tasks
    handler.removeCallbacks(runnable);
}

// Runnable task used by the handler to stop the sound
public Runnable runnable = new Runnable() {
    public void run() {
        cleanup();
    }
};
}

日志猫

09-18 00:28:59.000: E/AndroidRuntime(1627): android.app.SuperNotCalledException:  
Activity {com.androidsleepmachine.gamble/com.androidsleepmachine.gamble.Ship} did not 
call through to super.onStop()
09-18 00:28:59.000: E/AndroidRuntime(1627):     at 
android.app.Activity.performStop(Activity.java:5148)
09-18 00:28:59.000: E/AndroidRuntime(1627):     at   
android.app.ActivityThread.performDestroyActivity(ActivityThread.java:3232)
09-18 00:28:59.000: E/AndroidRuntime(1627):     at   
android.os.Handler.dispatchMessage(Handler.java:99)
09-18 00:28:59.000: E/AndroidRuntime(1627):     at 
android.os.Looper.loop(Looper.java:137)
09-18 00:28:59.000: E/AndroidRuntime(1627):     at  
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
09-18 00:28:59.000: E/AndroidRuntime(1627):     at     
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
4

2 回答 2

2

You need to check is user close the App or just switching to another Activity. You can check my Answers for that

Answer1

Answer2

Hope it helps!!

EDIT

Check this both method in your ship class.

 @Override
    protected void onStop() {
        Log.d(TAG, "App stopped");

        super.onStop();
    }

    @Override
    protected void onDestroy() {
        Log.d(TAG, "App destoryed");

        super.onDestroy();
    }
于 2013-09-18T04:00:13.853 回答
-2

use on key up

@Override
    public boolean onKeyUp(int keyCode, KeyEvent event) {
        // TODO Auto-generated method stub
        if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {
            stop sound!
            return true;
        }
        return super.onKeyUp(keyCode, event);
    }
于 2013-09-18T06:11:22.920 回答