我有一个应用程序应该从SD卡加载声音,然后单击按钮播放它。当我单击按钮时,我在LogCat中收到这些消息:无法创建外部文件目录,SoundPool错误加载/sound1.mp3,样本0未准备好 这是我的代码:
import java.io.File;
import android.media.AudioManager;
import android.media.SoundPool;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.view.Menu;
import android.view.View;
public class MainActivity extends Activity {
SoundPool sp;
int mSoundId;
int mStreamId = 0;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
sp = new SoundPool(5, AudioManager.STREAM_MUSIC, 0);
String path = getFullFilePath(getApplicationContext(), "sound1.mp3");
mSoundId = sp.load(path, 1);
}
private String getFullFilePath(Context context, String filename) {
File directory = context.getExternalFilesDir(null);
File file = new File(directory, filename);
if (!file.canRead()) {
// error handling
}
return file.getAbsolutePath();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
public void button1(View view){
if (mStreamId != 0) {
sp.stop(mStreamId);
}
mStreamId = sp.play(mSoundId, 1, 1, 1, 0, 1f);
}
}
我的LogCat错误:
11-04 18:56:34.499: D/dalvikvm(6547): GC_EXTERNAL_ALLOC freed 46K, 51% free 2686K/5379K, external 0K/0K, paused 57ms
11-04 18:56:34.539: W/ApplicationContext(6547): Unable to create external files directory
11-04 18:58:02.129: E/SoundPool(6644): error loading /sound1.mp3
添加WRITE_EXTERNAL_STORAGE Premission会出现此错误:
11-04 19:58:01.729: E/SoundPool(8022): error loading /mnt/sdcard/Android/data/com.example.idea/files/sound1.mp3
答案 0 :(得分:0)
出现此错误:
11-04 19:58:01.729: E/SoundPool(8022): error loading /mnt/sdcard/Android/data/com.example.idea/files/sound1.mp3
你说:
文件存在且位于/ mnt / sdcard /文件夹中。应用程序应搜索外部存储器sound1.mp3并加载它(如果存在)。
但是,/mnt/sdcard/
不是/mnt/sdcard/Android/data/com.example.idea/files/
只是将您的sound1.mp3
文件移动到您的应用程序默认sdcard文件夹,而SoundPool将能够加载它。