当点击Android上的ImageButton时播放随机声音。

huangapple
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英文:

Playing random sound when ImageButton is clicked on Android

问题

我是安卓新手，正在尝试在点击“ImageButton”时播放随机声音。

但每次我按按钮时仍然得到相同的音频。按钮每次被按下时应该播放不同的声音。以后我还想添加一个停止按钮。

这是我的代码：

  1. import android.content.pm.ActivityInfo;
  2. import android.os.Bundle;
  3. import android.media.MediaPlayer;
  4. import android.view.Menu;
  5. import android.view.View;
  6. import android.view.View.OnClickListener;
  7. import android.view.Window;
  8. import android.view.WindowManager;
  9. import android.widget.ImageButton;
  11. import java.util.Random;
  13. public class MainActivity extends AppCompatActivity {
  15.     MediaPlayer mp;
  16.     ImageButton soundbutton;
  18.     int[] sounds = {R.raw.audi, R.raw.berlin, R.raw.bratanki, R.raw.budzik, R.raw.cztery, R.raw.drzyz, R.raw.dziewczyny, R.raw.emeryt, R.raw.enter, R.raw.faza};
  19.     Random r = new Random();
  20.     int rndm = r.nextInt();
  22.     @Override
  23.     protected void onCreate(Bundle savedInstanceState) {
  24.         super.onCreate(savedInstanceState);
  25.         setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
  26.         requestWindowFeature(Window.FEATURE_NO_TITLE);
  27.         getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
  28.         setContentView(R.layout.activity_main);
  30.         soundbutton = (ImageButton)this.findViewById(R.id.playButton);
  31.         mp = MediaPlayer.create(getApplicationContext(), sounds[rndm]);
  32.         soundbutton.setOnClickListener(new View.OnClickListener() {
  33.             @Override
  34.             public void onClick(View v) {
  35.                 try {
  36.                     if (mp.isPlaying()) {
  37.                         mp.stop();
  38.                         mp.release();
  39.                         rndm = r.nextInt(sounds.length);
  40.                         mp = MediaPlayer.create(getApplicationContext(), sounds[rndm]);
  41.                     }
  42.                     mp.start();
  43.                 }
  44.                 catch (Exception e) {
  45.                     e.printStackTrace();
  46.                 }
  47.             }
  48.         });
  49.     }
  50. }

谢谢您的帮助。

英文:

I'm new in android and I'm trying to play random sound when ImageButton is clicked.

I'm still getting the same audio when I press the button. It should play different sounds every time the button is pressed. Also I would like to add a stop button later.

Here is my code:

  1. import android.content.pm.ActivityInfo;
  2. import android.os.Bundle;
  3. import android.media.MediaPlayer;
  4. import android.view.Menu;
  5. import android.view.View;
  6. import android.view.View.OnClickListener;
  7. import android.view.Window;
  8. import android.view.WindowManager;
  9. import android.widget.ImageButton;
  10. import java.util.Random;
  11. public
  12. class MainActivity extends AppCompatActivity {
  13. MediaPlayer mp;
  14. ImageButton soundbutton;
  15. int[] sounds = {R.raw.audi, R.raw.berlin, R.raw.bratanki, R.raw.budzik, R.raw.cztery, R.raw.drzyz, R.raw.dziewczyny, R.raw.emeryt, R.raw.enter, R.raw.faza};
  16. Random r = new Random();
  17. int rndm = r.nextInt();
  18. @Override protected void onCreate(Bundle savedInstanceState) {
  19. super.onCreate(savedInstanceState);
  20. setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
  21. requestWindowFeature(Window.FEATURE_NO_TITLE);
  22. getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
  23. setContentView(R.layout.activity_main);
  24. //media player
  25. soundbutton = (ImageButton)this.findViewById(R.id.playButton);
  26. mp = MediaPlayer.create(getApplicationContext(), sounds[rndm]);
  27. soundbutton.setOnClickListener(new View.OnClickListener() {
  28. @Override public void onClick(View v) {
  29. try {
  30. if (mp.isPlaying()) {
  31. mp.stop();
  32. mp.release();
  33. rndm = r.nextInt();
  34. mp = MediaPlayer.create(getApplicationContext(), sounds[rndm]);
  35. }
  36. mp.start();
  37. }
  38. catch (Exception e) {
  39. e.printStackTrace();
  40. }
  41. }
  42. });
  43. }
  44. }

Thank you for your help.

答案1

得分: 1

你需要充分发挥你的随机函数。你有10个声音，所以你想要一个在0-9之间的数字。

  1. rndm = r.nextInt(10);

这将给你一个在0-9之间的数字。

英文:

You need to give a maximum to your Random. You have 10 sounds so you want a number between 0-9.

  1. rndm = r.nextInt(10);

This will give you a number between 0-9.

huangapple
  • 本文由 发表于 2020年9月16日 23:33:14
  • 转载请务必保留本文链接：https://go.coder-hub.com/63923420.html
  • android
  • android-mediaplayer
  • java
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