首先，抱歉我的英语水平。
我需要一些帮助。我正在尝试开发一个应用程序(一个单击按钮即可听到声音的音箱)。我没有问题，但听了一些歌后，我的内存力出现了问题。这是我的日志:
enter code here11-10 15:21:02.446: E/Trace(942): error opening trace file: No such file or directory (2)
11-10 15:21:03.535: D/dalvikvm(942): GC_CONCURRENT freed 83K, 2% free 8369K/8519K, paused 83ms+4ms, total 149ms
11-10 15:21:03.535: D/dalvikvm(942): WAIT_FOR_CONCURRENT_GC blocked 24ms
11-10 15:21:03.795: D/dalvikvm(942): GC_CONCURRENT freed 10K, 2% free 8813K/8903K, paused 74ms+17ms, total 134ms
11-10 15:21:04.026: I/Choreographer(942): Skipped 46 frames! The application may be doing too much work on its main thread.
11-10 15:21:04.035: D/gralloc_goldfish(942): Emulator without GPU emulation detected.
11-10 15:21:04.276: D/AndroidRuntime(942): Shutting down VM
11-10 15:21:04.276: W/dalvikvm(942): threadid=1: thread exiting with uncaught exception (group=0x40a13300)
11-10 15:21:04.315: E/AndroidRuntime(942): FATAL EXCEPTION: main
11-10 15:21:04.315: E/AndroidRuntime(942): java.lang.RuntimeException: Expecting menu, got TabHost
11-10 15:21:04.315: E/AndroidRuntime(942): at android.view.MenuInflater.parseMenu(MenuInflater.java:143)
11-10 15:21:04.315: E/AndroidRuntime(942): at android.view.MenuInflater.inflate(MenuInflater.java:110)
11-10 15:21:04.315: E/AndroidRuntime(942): at com.example.famous.movies.sounds_.MainActivity.onCreateOptionsMenu(MainActivity.java:46)
11-10 15:21:04.315: E/AndroidRuntime(942): at android.app.Activity.onCreatePanelMenu(Activity.java:2476)
11-10 15:21:04.315: E/AndroidRuntime(942): at com.android.internal.policy.impl.PhoneWindow.preparePanel(PhoneWindow.java:393)
11-10 15:21:04.315: E/AndroidRuntime(942): at com.android.internal.policy.impl.PhoneWindow.invalidatePanelMenu(PhoneWindow.java:747)
11-10 15:21:04.315: E/AndroidRuntime(942): at com.android.internal.policy.impl.PhoneWindow$1.run(PhoneWindow.java:2913)
11-10 15:21:04.315: E/AndroidRuntime(942): at android.os.Handler.handleCallback(Handler.java:615)
11-10 15:21:04.315: E/AndroidRuntime(942): at android.os.Handler.dispatchMessage(Handler.java:92)
11-10 15:21:04.315: E/AndroidRuntime(942): at android.os.Looper.loop(Looper.java:137)
11-10 15:21:04.315: E/AndroidRuntime(942): at android.app.ActivityThread.main(ActivityThread.java:4745)
11-10 15:21:04.315: E/AndroidRuntime(942): at java.lang.reflect.Method.invokeNative(Native Method)
11-10 15:21:04.315: E/AndroidRuntime(942): at java.lang.reflect.Method.invoke(Method.java:511)
11-10 15:21:04.315: E/AndroidRuntime(942): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
11-10 15:21:04.315: E/AndroidRuntime(942): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
11-10 15:21:04.315: E/AndroidRuntime(942): at dalvik.system.NativeStart.main(Native Method)
我该如何修复它？我已经放了两个标签，但歌曲只在第一个标签上。这是java代码:
public class MainActivity extends TabActivity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Gestion des onglets
// Tout d'abord on récupère les ressources qui seront utilisés plus tard :
Resources res = getResources();
// On prépare les éléments nécessaires pour chaque onglet :
TabHost tabHost = getTabHost();
TabHost.TabSpec spec;
Intent intent;
// on lie nos onglets à la principale activity :
// ONGLET 1
intent = new Intent().setClass(this, Tab1.class);
spec = tabHost.newTabSpec("Widget").setIndicator("Cinema", res.getDrawable(R.drawable.movies)).setContent(intent);
tabHost.addTab(spec);
// ONGLET 2
intent = new Intent().setClass(this, Tab2.class);
spec = tabHost.newTabSpec("Form").setIndicator("Infos", res.getDrawable(R.drawable.infos)).setContent(intent);
tabHost.addTab(spec);
// On choisit l'onglet par défaut
tabHost.setCurrentTab(0);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.layout.activity_main, menu);
return true;
}
}
public class Tab1 extends Activity {
private MediaPlayer mPlayer = null;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.onglet1);
final int sound11 = R.raw.carjacker;
final int sound12 = R.raw.petitesoeur;
final int sound13 = R.raw.cracherlama;
final int sound14 = R.raw.maitresse;
final int sound21 = R.raw.gandalfen;
final int sound22 = R.raw.gandalf;
final int sound23 = R.raw.gollum;
final int sound24 = R.raw.gollumen;
final int sound31 = R.raw.pasdebraspasdechocolat;
final int sound32 = R.raw.sparta;
final int sound33 = R.raw.sabre;
final int sound34 = R.raw.darkvador;
final int sound41 = R.raw.back;
final int sound42 = R.raw.fightclub;
final int sound43 = R.raw.forrestgump;
final int sound44 = R.raw.iamyourfather;
final int sound51 = R.raw.loki;
final int sound52 = R.raw.dinercon1;
final int sound53 = R.raw.gollum;
final int sound54 = R.raw.gollum;
/* final int sound61 = R.raw.dinercondroit4;
final int sound62 = R.raw.dinerconfemme5;
final int sound63 = R.raw.dinerconchampion6;
final int sound64 = R.raw.dinerconsonne7;
*/
generateSoundOnButton(sound11, R.id.btn11);
generateSoundOnButton(sound12, R.id.btn12);
generateSoundOnButton(sound13, R.id.btn13);
generateSoundOnButton(sound14, R.id.btn14);
generateSoundOnButton(sound21, R.id.btn21);
generateSoundOnButton(sound22, R.id.btn22);
generateSoundOnButton(sound23, R.id.btn23);
generateSoundOnButton(sound24, R.id.btn24);
generateSoundOnButton(sound31, R.id.btn31);
generateSoundOnButton(sound32, R.id.btn32);
generateSoundOnButton(sound33, R.id.btn33);
generateSoundOnButton(sound34, R.id.btn34);
generateSoundOnButton(sound41, R.id.btn41);
generateSoundOnButton(sound42, R.id.btn42);
generateSoundOnButton(sound43, R.id.btn43);
generateSoundOnButton(sound44, R.id.btn44);
generateSoundOnButton(sound51, R.id.btn51);
generateSoundOnButton(sound52, R.id.btn52);
generateSoundOnButton(sound53, R.id.btn53);
generateSoundOnButton(sound54, R.id.btn54);
/*
generateSoundOnButton(sound61, R.id.btn61);
generateSoundOnButton(sound62, R.id.btn62);
generateSoundOnButton(sound63, R.id.btn63);
generateSoundOnButton(sound64, R.id.btn64);
*/
}
public void generateSoundOnButton(final int soundId, int idButton) {
final ImageButton btn = (ImageButton) findViewById(idButton);
btn.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
playSound(soundId);
}
});
}
@Override
public void onPause() {
super.onPause();
if(mPlayer != null) {
mPlayer.stop();
mPlayer.release();
}
}
private void playSound(int resId) {
if(mPlayer != null) {
mPlayer.stop();
mPlayer.release();
}
mPlayer = MediaPlayer.create(this, resId);
mPlayer.start();
}
}
public class Tab2 extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.onglet2);
}
}
实际上一开始我删除了 mPlayer.stop() 方法，因为存在错误，并且没有这个方法它工作得很好，所以我认为现在是问题所在，但是当我再次添加这个方法时什么也没有发生，有同样的错误。真的有一个在 Android 上正确播放声音而没有问题的好方法吗？
任何帮助和建议将不胜感激。如果您有任何意见或问题，请随时提出。
非常感谢您的帮助。
最佳答案
是的，但已经是这样了。我在 res/menu 中有一个 Activity_main.xml ，其中包含以下代码:
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="@+id/menu_settings"
android:title="@string/menu_settings"
android:orderInCategory="100" />
</menu>
我在 res/layout 中有三个文件:activity_main.xml，其中包含以下代码:
<?xml version="1.0" encoding="utf-8"?>
<!-- MISE EN PLACE DE LA BASE DE NOS 3 ONGLETS -->
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#66FF99">
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="5dp"
android:background="#E2F0FF">
<TabWidget
android:id="@android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#FFFFFF"
/>
<FrameLayout
android:id="@android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="5dp"
android:background="#E2F0FF" />
</LinearLayout>
</TabHost>
onglet1.xml 等于 tab1 与所有歌曲(我认为没有其他解决方案来编写所有 xml 代码......？):
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/linearLayoutOnglet1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#E2F2FF"
android:orientation="vertical"
android:weightSum="1.0" >
<!-- Ligne 1 -->
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/linearLayoutOnglet1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#E2F2FF"
android:orientation="horizontal"
android:weightSum="1.0" >
<ImageButton
android:id="@+id/btn12"
android:layout_width="90px"
android:layout_height="110px"
android:layout_weight="0.25"
android:src="@drawable/petitesoeur" />
<ImageButton
android:id="@+id/btn11"
android:layout_width="90px"
android:layout_height="110px"
android:layout_weight="0.25"
android:src="@drawable/carjacker" />
<ImageButton
android:id="@+id/btn13"
android:layout_width="90px"
android:layout_height="110px"
android:layout_weight="0.25"
android:src="@drawable/cracherlama" />
<ImageButton
android:id="@+id/btn14"
android:layout_width="90px"
android:layout_height="110px"
android:layout_weight="0.25"
android:src="@drawable/maitresse" />
</LinearLayout>
<!-- Ligne 2 -->
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/linearLayoutOnglet1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#E2F2FF"
android:orientation="horizontal"
android:weightSum="1.0" >
<ImageButton
android:id="@+id/btn21"
android:layout_width="90px"
android:layout_height="110px"
android:layout_weight="0.25"
android:src="@drawable/gandalfen" />
<ImageButton
android:id="@+id/btn22"
android:layout_width="90px"
android:layout_height="110px"
android:layout_weight="0.25"
android:src="@drawable/gandalf" />
<ImageButton
android:id="@+id/btn23"
android:layout_width="90px"
android:layout_height="110px"
android:layout_weight="0.25"
android:src="@drawable/gollum" />
<ImageButton
android:id="@+id/btn24"
android:layout_width="90px"
android:layout_height="110px"
android:layout_weight="0.25"
android:src="@drawable/gollumen" />
</LinearLayout>
<!-- Ligne 3 -->
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/linearLayoutOnglet1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#E2F2FF"
android:orientation="horizontal"
android:weightSum="1.0" >
<ImageButton
android:id="@+id/btn31"
android:layout_width="90px"
android:layout_height="110px"
android:layout_weight="0.25"
android:src="@drawable/pasdebraspasdechocolat" />
<ImageButton
android:id="@+id/btn32"
android:layout_width="90px"
android:layout_height="110px"
android:layout_weight="0.25"
android:src="@drawable/sparta" />
<ImageButton
android:id="@+id/btn33"
android:layout_width="90px"
android:layout_height="110px"
android:layout_weight="0.25"
android:src="@drawable/sabre" />
<ImageButton
android:id="@+id/btn34"
android:layout_width="90px"
android:layout_height="110px"
android:layout_weight="0.25"
android:src="@drawable/darkvador" />
</LinearLayout>
<!-- Ligne 4 -->
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/linearLayoutOnglet1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#E2F2FF"
android:orientation="horizontal"
android:weightSum="1.0" >
<ImageButton
android:id="@+id/btn41"
android:layout_width="90px"
android:layout_height="110px"
android:layout_weight="0.25"
android:src="@drawable/back" />
<ImageButton
android:id="@+id/btn42"
android:layout_width="90px"
android:layout_height="110px"
android:layout_weight="0.25"
android:src="@drawable/fightclub" />
<ImageButton
android:id="@+id/btn43"
android:layout_width="90px"
android:layout_height="110px"
android:layout_weight="0.25"
android:src="@drawable/forrestgump" />
<ImageButton
android:id="@+id/btn44"
android:layout_width="90px"
android:layout_height="110px"
android:layout_weight="0.25"
android:src="@drawable/darkvadorpereen" />
</LinearLayout>
<!-- Ligne 5 -->
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/linearLayoutOnglet1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#E2F2FF"
android:orientation="horizontal"
android:weightSum="1.0" >
<ImageButton
android:id="@+id/btn51"
android:layout_width="90px"
android:layout_height="110px"
android:layout_weight="0.25"
android:src="@drawable/loki" />
<ImageButton
android:id="@+id/btn52"
android:layout_width="90px"
android:layout_height="110px"
android:layout_weight="0.25"
android:src="@drawable/dinercon1" />
<ImageButton
android:id="@+id/btn53"
android:layout_width="90px"
android:layout_height="110px"
android:layout_weight="0.25"
android:src="@drawable/gollum" />
<ImageButton
android:id="@+id/btn54"
android:layout_width="90px"
android:layout_height="110px"
android:layout_weight="0.25"
android:src="@drawable/gollum" />
</LinearLayout>
</LinearLayout>
<!-- Ligne 6 -->
<!--
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/linearLayoutOnglet1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#E2F2FF"
android:orientation="horizontal"
android:weightSum="1.0" >
<ImageButton
android:id="@+id/btn61"
android:layout_width="90px"
android:layout_height="110px"
android:layout_weight="0.25"
android:src="@drawable/dinercondroit4" />
<ImageButton
android:id="@+id/btn62"
android:layout_width="90px"
android:layout_height="110px"
android:layout_weight="0.25"
android:src="@drawable/dinerconfemme5" />
<ImageButton
android:id="@+id/btn63"
android:layout_width="90px"
android:layout_height="110px"
android:layout_weight="0.25"
android:src="@drawable/dinerconchampion6" />
<ImageButton
android:id="@+id/btn64"
android:layout_width="90px"
android:layout_height="110px"
android:layout_weight="0.25"
android:src="@drawable/dinerconsonne7" />
</LinearLayout>
-->
onglet2.xml 等于 tab2.xml，现在这并不重要......
关于java - Android GC_CONCURRENT 和音箱应用程序开发，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/13323444/