对于我的应用程序，我有一堆切换方法，用于抽屉。单击抽屉上的3个项目后，第四个项目导致应用程序崩溃，我收到此错误。
java.lang.OutOfMemoryError
at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method)
at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:587)
at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:422)
at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:840)
at android.content.res.Resources.loadDrawable(Resources.java:2110)
at android.content.res.Resources.getDrawable(Resources.java:700)
at android.widget.ImageView.resolveUri(ImageView.java:638)
at android.widget.ImageView.setImageResource(ImageView.java:367)
at icykum.JasonSafaiyeh.cocg.troopScreen$PlaceholderFragment.onCreateView(troopScreen.java:636)
at android.support.v4.app.Fragment.performCreateView(Fragment.java:1500)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:927)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1104)
at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1467)
at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:440)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
部队屏幕：
public class troopScreen extends ActionBarActivity
implements TroopNavigationDrawerFragment.NavigationDrawerCallbacks {
/**
* Fragment managing the behaviors, interactions and presentation of the navigation drawer.
*/
private TroopNavigationDrawerFragment mNavigationDrawerFragment;
/**
* Used to store the last screen title. For use in {@link #restoreActionBar()}.
*/
private CharSequence mTitle;
public int firstTroop = 0,
secondTroop = 0,
thirdTroop = 0,
fourthTroop = 0,
fifthTroop = 0,
description = 0,
troop_costs = 0,
troop_stats = 0,
troop_stats2 = 0;
public String firstTroopText = "",
secondTroopText = "",
thirdTroopText = "",
fourthTroopText = "",
fifthTroopText = "";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_troop_screen);
mNavigationDrawerFragment = (TroopNavigationDrawerFragment)
getSupportFragmentManager().findFragmentById(R.id.navigation_drawer);
mTitle = getTitle();
// Set up the drawer.
mNavigationDrawerFragment.setUp(
R.id.navigation_drawer,
(DrawerLayout) findViewById(R.id.drawer_layout));
}
@Override
public void onNavigationDrawerItemSelected(int position) {
// update the main content by replacing fragments
FragmentManager fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction()
.replace(R.id.container, PlaceholderFragment.newInstance(position + 1))
.commit();
}
//Titles
public String onSectionAttached(int number) {
switch (number) {
case 1:
mTitle = "Barbarian";
break;
case 2:
mTitle = "Archer";
break;
case 3:
mTitle = "Goblin";
break;
case 4:
mTitle = "Giant";
break;
case 5:
mTitle = "Wall Breaker";
break;
case 6:
mTitle = "Balloon";
break;
case 7:
mTitle = "Wizard";
break;
case 8:
mTitle = "Healer";
break;
case 9:
mTitle = "Dragon";
break;
case 10:
mTitle = "P.E.K.K.A";
break;
case 11:
mTitle = "Minion";
break;
case 12:
mTitle = "Hog Rider";
break;
case 13:
mTitle = "Valkyrie";
break;
case 14:
mTitle = "Golem";
break;
case 15:
mTitle = "Witch";
break;
case 16:
mTitle = "Barbarian King";
break;
case 17:
mTitle = "Archer Queen";
break;
}
return (String) mTitle;
}
public int getFirstTroop(int number){
switch(number){
case 1:
firstTroop = R.drawable.barb;
break;
case 2:
firstTroop = R.drawable.archer;
break;
case 3:
firstTroop = R.drawable.goblin;
break;
case 4:
firstTroop = R.drawable.giant;
break;
case 5:
firstTroop = R.drawable.wb;
break;
case 6:
firstTroop = R.drawable.balloon;
break;
case 7:
firstTroop = R.drawable.wizard;
break;
case 8:
firstTroop = R.drawable.healer;
break;
case 9:
firstTroop = R.drawable.dragon;
break;
}
return firstTroop;
}
public String getFirstTroopText(int number){
switch(number){
case 1:
firstTroopText = "Lvl 1 & 2";
break;
case 2:
firstTroopText = "Lvl 1 & 2";
break;
case 3:
firstTroopText = "Lvl 1 & 2";
break;
case 4:
firstTroopText = "Lvl 1 & 2";
break;
case 5:
firstTroopText = "Lvl 1 & 2";
break;
case 6:
firstTroopText = "Lvl 1 & 2";
break;
case 7:
firstTroopText = "Lvl 1 & 2";
break;
case 8:
firstTroopText = "Lvl 1 & 2";
break;
case 9:
firstTroopText = "Level 1";
break;
}
return firstTroopText;
}
public int getSecondTroop(int number){
switch(number){
case 1:
secondTroop = R.drawable.barb2;
break;
case 2:
secondTroop = R.drawable.archer2;
break;
case 3:
secondTroop = R.drawable.goblin2;
break;
case 4:
secondTroop = R.drawable.giant2;
break;
case 5:
secondTroop = R.drawable.wb2;
break;
case 6:
secondTroop = R.drawable.balloon2;
break;
case 7:
secondTroop = R.drawable.wizard2;
break;
case 8:
secondTroop = R.drawable.healer2;
break;
case 9:
secondTroop = R.drawable.dragon2;
break;
}
return secondTroop;
}
public String getSecondTroopText(int number){
switch(number){
case 1:
secondTroopText = "Lvl 3 & 4";
break;
case 2:
secondTroopText = "Lvl 3 & 4";
break;
case 3:
secondTroopText = "Lvl 3 & 4";
break;
case 4:
secondTroopText = "Lvl 3 & 4";
break;
case 5:
secondTroopText = "Lvl 3 & 4";
break;
case 6:
secondTroopText = "Lvl 3 & 4";
break;
case 7:
secondTroopText = "Level 3";
break;
case 8:
secondTroopText = "Lvl 3 & 4";
break;
case 9:
secondTroopText = "Level 2";
break;
}
return secondTroopText;
}
public int getThirdTroop(int number){
switch(number){
case 1:
thirdTroop = R.drawable.barb3;
break;
case 2:
thirdTroop = R.drawable.archer3;
break;
case 3:
thirdTroop = R.drawable.goblin3;
break;
case 4:
thirdTroop = R.drawable.giant3;
break;
case 5:
thirdTroop = R.drawable.wb3;
break;
case 6:
thirdTroop = R.drawable.balloon3;
break;
case 7:
thirdTroop = R.drawable.wizard3;
break;
// No 8
case 9:
thirdTroop = R.drawable.dragon3;
break;
}
return thirdTroop;
}
public String getThirdTroopText(int number){
switch(number){
case 1:
thirdTroopText = "Level 5";
break;
case 2:
thirdTroopText = "Level 5";
break;
case 3:
thirdTroopText = "Level 5";
break;
case 4:
thirdTroopText = "Level 5";
break;
case 5:
thirdTroopText = "Level 5";
break;
case 6:
thirdTroopText = "Level 5";
break;
case 7:
thirdTroopText = "Level 4";
break;
// no 8
case 9:
thirdTroopText = "Level 3";
break;
}
return thirdTroopText;
}
public int getFourthTroop(int number){
switch(number){
case 1:
fourthTroop = R.drawable.barb4;
break;
case 2:
fourthTroop = R.drawable.archer4;
break;
case 3:
fourthTroop = R.drawable.goblin4;
break;
case 4:
fourthTroop = R.drawable.giant4;
break;
case 5:
fourthTroop = R.drawable.wb4;
break;
case 6:
fourthTroop = R.drawable.balloon4;
break;
case 7:
fourthTroop = R.drawable.wizard4;
break;
//No 8
case 9:
fourthTroop = R.drawable.dragon4;
break;
}
return fourthTroop;
}
public String getFourthTroopText(int number){
switch(number){
case 1:
fourthTroopText = "Level 6";
break;
case 2:
fourthTroopText = "Level 6";
break;
case 3:
fourthTroopText = "Level 6";
break;
case 4:
fourthTroopText = "Level 6";
break;
case 5:
fourthTroopText = "Level 6";
break;
case 6:
fourthTroopText = "Level 6";
break;
case 7:
fourthTroopText = "Level 5";
break;
// no 8
case 9:
fourthTroopText = "Level 4";
break;
}
return fourthTroopText;
}
public int getFifthTroop(int number){
switch(number){
//#1-6 no fifth troop
case 7:
fifthTroop = R.drawable.wizard5;
break;
//no 8
//no 9
}
return fifthTroop;
}
public String getFifthTroopText(int number){
switch(number){
//#1-6 no fifth troop
case 7:
fifthTroopText = "Level 6";
break;
// no 8
// no 9
}
return fifthTroopText;
}
public int getDescription(int number){
switch (number){
case 1:
description = R.drawable.barb_description;
break;
case 2:
description = R.drawable.arch_description;
break;
case 3:
description = R.drawable.gob_description;
break;
case 4:
description = R.drawable.giant_description;
break;
case 5:
description = R.drawable.wb_description;
break;
case 6:
description = R.drawable.balloon_description;
break;
case 7:
description = R.drawable.wizard_description;
break;
case 8:
description = R.drawable.healer_description;
break;
case 9:
description = R.drawable.dragon_description;
break;
}
return description;
}
public int getTroop_costs(int number){
switch (number){
case 1:
troop_costs = R.drawable.barb_costs;
break;
case 2:
troop_costs = R.drawable.arch_costs;
break;
case 3:
troop_costs = R.drawable.gob_costs;
break;
case 4:
troop_costs = R.drawable.giant_costs;
break;
case 5:
troop_costs = R.drawable.wb_costs;
break;
case 6:
troop_costs = R.drawable.balloon_costs;
break;
case 7:
troop_costs = R.drawable.wizard_costs;
break;
case 8:
troop_costs = R.drawable.healer_costs;
break;
case 9:
troop_costs = R.drawable.dragon_costs;
}
return troop_costs;
}
public int getTroop_stats(int number){
switch(number){
case 1:
troop_stats = R.drawable.barb_stats;
break;
case 2:
troop_stats = R.drawable.arch_stats;
break;
case 3:
troop_stats = R.drawable.gob_stats;
break;
case 4:
troop_stats = R.drawable.giant_stats;
break;
case 5:
troop_stats = R.drawable.wb_stats;
break;
case 6:
troop_stats = R.drawable.balloon_stats;
break;
case 7:
troop_stats = R.drawable.wizard_stats;
break;
case 8:
troop_stats = R.drawable.healer_stats;
break;
case 9:
troop_stats = R.drawable.dragon_stats;
break;
}
return troop_stats;
}
public int getTroop_stats2(int number){
switch(number){
case 1:
troop_stats2 = R.drawable.barb_stats2;
break;
case 2:
troop_stats2 = R.drawable.arch_stats2;
break;
// Case 3... No Goblin
// Case 4... No Giant
case 5:
troop_stats2 = R.drawable.wb_stats2;
break;
case 6:
troop_stats2 = R.drawable.balloon_stats2;
break;
//Case 7... No Wizard
//No 8 or 9
}
return troop_stats2;
}
public void restoreActionBar() {
ActionBar actionBar = getSupportActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
actionBar.setDisplayShowTitleEnabled(true);
actionBar.setTitle(mTitle);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
if (!mNavigationDrawerFragment.isDrawerOpen()) {
// Only show items in the action bar relevant to this screen
// if the drawer is not showing. Otherwise, let the drawer
// decide what to show in the action bar.
getMenuInflater().inflate(R.menu.troop_screen, menu);
restoreActionBar();
return true;
}
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
return id == R.id.action_settings || super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
/**
* The fragment argument representing the section number for this
* fragment.
*/
private static final String ARG_SECTION_NUMBER = "section_number";
private troopScreen troopScreen = new troopScreen();
/**
* Returns a new instance of this fragment for the given section
* number.
*/
public static PlaceholderFragment newInstance(int sectionNumber) {
PlaceholderFragment fragment = new PlaceholderFragment();
Bundle args = new Bundle();
args.putInt(ARG_SECTION_NUMBER, sectionNumber);
fragment.setArguments(args);
return fragment;
}
public PlaceholderFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_troop_screen, container, false);
assert rootView != null;
//First Troop
ImageView imageView = (ImageView) rootView.findViewById(R.id.t_first_troop);
imageView.setImageResource(troopScreen.getFirstTroop(getArguments().getInt(ARG_SECTION_NUMBER)));
//First Troop Text
TextView textView = (TextView) rootView.findViewById(R.id.t_first_troop_text);
textView.setText(troopScreen.getFirstTroopText(getArguments().getInt(ARG_SECTION_NUMBER)));
//Second Troop
ImageView imageView1 = (ImageView) rootView.findViewById(R.id.t_second_troop);
imageView1.setImageResource(troopScreen.getSecondTroop(getArguments().getInt(ARG_SECTION_NUMBER)));
//Second Troop Text
TextView textView1 = (TextView) rootView.findViewById(R.id.t_second_troop_text);
textView1.setText(troopScreen.getSecondTroopText(getArguments().getInt(ARG_SECTION_NUMBER)));
//Third Troop
ImageView imageView2 = (ImageView) rootView.findViewById(R.id.t_third_troop);
imageView2.setImageResource(troopScreen.getThirdTroop(getArguments().getInt(ARG_SECTION_NUMBER)));
//Third Troop Text
TextView textView2 = (TextView) rootView.findViewById(R.id.t_third_troop_text);
textView2.setText(troopScreen.getThirdTroopText(getArguments().getInt(ARG_SECTION_NUMBER)));
//Fourth Troop
ImageView imageView3 = (ImageView) rootView.findViewById(R.id.t_fourth_troop);
imageView3.setImageResource(troopScreen.getFourthTroop(getArguments().getInt(ARG_SECTION_NUMBER)));
//Fourth Troop Text
TextView textView3 = (TextView) rootView.findViewById(R.id.t_fourth_troop_text);
textView3.setText(troopScreen.getFourthTroopText(getArguments().getInt(ARG_SECTION_NUMBER)));
//Troop Description
ImageView imageView4 = (ImageView) rootView.findViewById(R.id.t_description);
imageView4.setImageResource(troopScreen.getDescription(getArguments().getInt(ARG_SECTION_NUMBER)));
//Troop Costs
ImageView imageView5 = (ImageView) rootView.findViewById(R.id.t_stats);
imageView5.setImageResource(troopScreen.getTroop_costs(getArguments().getInt(ARG_SECTION_NUMBER)));
//Troop Stats
ImageView imageView6 = (ImageView) rootView.findViewById(R.id.t_second_stats);
imageView6.setImageResource(troopScreen.getTroop_stats(getArguments().getInt(ARG_SECTION_NUMBER)));
//More Troop Stats
ImageView imageView7 = (ImageView) rootView.findViewById(R.id.t_third_stats);
imageView7.setImageResource(troopScreen.getTroop_stats2(getArguments().getInt(ARG_SECTION_NUMBER)));
//Fifth Troop
ImageView imageView8 = (ImageView) rootView.findViewById(R.id.t_fifth_troop);
imageView8.setImageResource(troopScreen.getFifthTroop(getArguments().getInt(ARG_SECTION_NUMBER)));
//Fifth Troop Text
TextView textView4 = (TextView) rootView.findViewById(R.id.t_fifth_troop_text);
textView4.setText(troopScreen.getFifthTroopText(getArguments().getInt(ARG_SECTION_NUMBER)));
return rootView;
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
((troopScreen) activity).onSectionAttached(
getArguments().getInt(ARG_SECTION_NUMBER));
}
}
}
可能导致这种情况的原因是什么？
答案 0 :(得分：1)
从这行代码开始（并删除它）：
private troopScreen troopScreen = new troopScreen();
看起来你需要这个来访问troopScreen类中的实用程序方法（应该将其重命名为TroopScreen以遵循标准的Java命名约定，并通过本文的其余部分，我将如何引用它）
我建议你制作这些方法static并通过TroopScreen.getFirstTroop()之类的调用等来调用它们（或考虑将它们移动到你的片段，或者可能是外部类）。
看起来你可能有一个循环引用，因为你的Fragment中实际上有一个Activity（TroopScreen）实例。我不是片段管理器专家，但我无法想象如果你的片段需要被销毁，这不会造成某种问题。
我怀疑那是你的记忆泄漏。
祝你好运。答案 1 :(得分：1)
正如接受的答案所示，看起来像是一个导致内存泄漏的循环引用。
对于遇到类似错误的任何人，there's a great Google IO video that does in to a great detail on how to debug and get to the bottom of memory errors。这应该为您提供了解决SO无法解决的任何内存泄漏问题的工具。
答案 2 :(得分：0)
使用-Xmx命令行选项
设置VM参数，如-Xmx1024M
答案 3 :(得分：0)
OutOfMemory接近解码位图通常是由于将大量图像提取到内存中。请记住：如果将位图加载到mem中，则会解析并消耗分辨率x colorDepth字节，这对于高密度屏幕上的大图像可能会很多。
此外，如果你总是重新加载你的图像，但是有一个隐藏的内存泄漏，你可能会遇到问题。在处理大量图像时，您应该尝试缓存并重用它们。请尝试遵循此http://developer.android.com/training/displaying-bitmaps/cache-bitmap.html教程中描述的最佳实践。