【发布时间】：2015-03-23 19:06:12
【问题描述】：
我使用 FragmentStatePagerAdapter 以便在碎片不在视野范围内时将其销毁，但我的应用程序仍然崩溃 - 当我滑动到第三个碎片然后应用程序崩溃时，内存监视器显示内存使用量达到峰值。当我试图构建一个音板应用程序时，我总共有 5 个片段。每个片段都是不同的音板。
这是我的 mainactivity.java
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;
public class MainActivity extends FragmentActivity {
ViewPager viewpager;
@Override
protected void onCreate(Bundle savedInstanceState )
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
viewpager = (ViewPager) findViewById(R.id.pager);
PagerAdapter padapter = new PagerAdapter(getSupportFragmentManager());
viewpager.setAdapter(padapter);
viewpager.setOffscreenPageLimit(0);
}
}
这是我的 pageradapter.java
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentStatePagerAdapter;
public class PagerAdapter extends FragmentStatePagerAdapter {
public PagerAdapter(FragmentManager fm) {
super(fm);
// TODO Auto-generated constructor stub
}
@Override
public Fragment getItem(int arg0) {
// TODO Auto-generated method stub
switch (arg0) {
case 0:
return new FragmentOne();
case 1:
return new FragmentTwo();
case 2:
return new FragmentThree();
case 3:
return new FragmentFour();
case 4:
return new FragmentFive();
default:
break;
}
return null;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return 5;
}
}
这是我五个片段中的第一个片段：
public class FragmentOne extends Fragment {
SoundPool Clubb1;
int clubb1Id;
SoundPool Clubb2;
int clubb2Id;
SoundPool Clubb3;
int clubb3Id;
SoundPool Clubb4;
int clubb4Id;
SoundPool Clubb5;
int clubb5Id;
SoundPool Clubb6;
int clubb6Id;
SoundPool Clubb7;
int clubb7Id;
SoundPool Clubb8;
int clubb8Id;
SoundPool Clubb9;
int clubb9Id;
SoundPool Clubb10;
int clubb10Id;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState
) {
Clubb1 = new SoundPool(10, AudioManager.STREAM_MUSIC, 1);
clubb1Id = Clubb1.load(getActivity(), R.raw.clubb1, 1);
Clubb2 = new SoundPool(10, AudioManager.STREAM_MUSIC, 1);
clubb2Id = Clubb2.load(getActivity(), R.raw.clubb2, 1);
Clubb3 = new SoundPool(10, AudioManager.STREAM_MUSIC, 1);
clubb3Id = Clubb3.load(getActivity(), R.raw.clubb3, 1);
Clubb4 = new SoundPool(10, AudioManager.STREAM_MUSIC, 1);
clubb4Id = Clubb4.load(getActivity(), R.raw.clubb4, 1);
Clubb5 = new SoundPool(10, AudioManager.STREAM_MUSIC, 1);
clubb5Id = Clubb5.load(getActivity(), R.raw.clubb5, 1);
Clubb6 = new SoundPool(10, AudioManager.STREAM_MUSIC, 1);
clubb6Id = Clubb6.load(getActivity(), R.raw.clubb6, 1);
Clubb7 = new SoundPool(10, AudioManager.STREAM_MUSIC, 1);
clubb7Id = Clubb7.load(getActivity(), R.raw.clubb7, 1);
Clubb8 = new SoundPool(10, AudioManager.STREAM_MUSIC, 1);
clubb8Id = Clubb8.load(getActivity(), R.raw.clubb8, 1);
Clubb9 = new SoundPool(10, AudioManager.STREAM_MUSIC, 1);
clubb9Id = Clubb9.load(getActivity(), R.raw.clubb9, 1);
Clubb10 = new SoundPool(10, AudioManager.STREAM_MUSIC, 1);
clubb10Id = Clubb10.load(getActivity(), R.raw.clubb10, 1);
View rootView = inflater.inflate(R.layout.fragment_one_layout, container, false);
Button buttonA = (Button) rootView.findViewById(R.id.buttonA);
Button buttonB = (Button) rootView.findViewById(R.id.buttonB);
Button buttonC = (Button) rootView.findViewById(R.id.buttonC);
Button buttonD = (Button) rootView.findViewById(R.id.buttonD);
Button buttonE = (Button) rootView.findViewById(R.id.buttonE);
Button buttonF = (Button) rootView.findViewById(R.id.buttonF);
Button buttonG = (Button) rootView.findViewById(R.id.buttonG);
Button buttonH = (Button) rootView.findViewById(R.id.buttonH);
Button buttonI = (Button) rootView.findViewById(R.id.buttonI);
Button buttonJ = (Button) rootView.findViewById(R.id.buttonJ);
View.OnClickListener ocl = new View.OnClickListener() {
@Override
public void onClick(View v) {
switch (v.getId()){
case R.id.buttonA:
//A clicked
Clubb1.play(clubb1Id, 1, 1, 1, 0, 1);
break;
case R.id.buttonB:
//B clicked
Clubb2.play(clubb2Id, 1, 1, 1, 0, 1);
break;
case R.id.buttonC:
//C clicked
Clubb3.play(clubb3Id, 1, 1, 1, 0, 1);
break;
case R.id.buttonD:
//D clicked
Clubb4.play(clubb4Id, 1, 1, 1, 0, 1);
break;
case R.id.buttonE:
//E clicked
Clubb5.play(clubb5Id, 3, 3, 1, 0, 1);
break;
case R.id.buttonF:
//F clicked
Clubb6.play(clubb6Id, 1, 1, 1, 0, 1);
break;
case R.id.buttonG:
//G clicked
Clubb7.play(clubb7Id, 1, 1, 1, 0, 1);
break;
case R.id.buttonH:
//H clicked
Clubb8.play(clubb8Id, 1, 1, 1, 0, 1);
break;
case R.id.buttonI:
//I clicked
Clubb9.play(clubb9Id, 1, 1, 1, 0, 1);
break;
case R.id.buttonJ:
//J clicked
Clubb10.play(clubb10Id, 1, 1, 1, 0, 1);
break;
}
}
};
buttonA.setOnClickListener(ocl);
buttonB.setOnClickListener(ocl);
buttonC.setOnClickListener(ocl);
buttonD.setOnClickListener(ocl);
buttonE.setOnClickListener(ocl);
buttonF.setOnClickListener(ocl);
buttonG.setOnClickListener(ocl);
buttonH.setOnClickListener(ocl);
buttonI.setOnClickListener(ocl);
buttonJ.setOnClickListener(ocl);
return rootView;
}}
任何想法如何阻止这种内存峰值和应用程序崩溃？当我只用 3 个片段尝试它时，该应用程序运行得非常好，并且没有崩溃或滞后。现在我已经添加了两个片段，当您滑动到第三个或第四个片段并且永远不会加载第 5 个片段时，应用程序会崩溃。它不会让你滑动那么远。我真的很迷茫，现在不知道该怎么办。
【问题讨论】：
标签： java android memory android-fragments