android - 加载 View 分页器时出现奇怪的OutOfMemoryError

我使用FragmentStatePagerAdapter创建了一个包含视图寻呼机的活动。使用下面的OutOfMemmoryError启动此活动时，应用程序立即崩溃。请帮我指出哪个错误。我花了几个小时，但找不到自己。

02-07 23:04:58.187 16037-16037/com.makeit.lite E/AndroidRuntime: Error reporting crash
java.lang.OutOfMemoryError: Failed to allocate a 34831542 byte allocation with 16765168 free bytes and 31MB until OOM
    at java.lang.AbstractStringBuilder.enlargeBuffer(AbstractStringBuilder.java:95)
    at java.lang.AbstractStringBuilder.append0(AbstractStringBuilder.java:125)
    at java.lang.StringBuffer.append(StringBuffer.java:278)
    at java.io.StringWriter.write(StringWriter.java:123)
    at com.android.internal.util.FastPrintWriter.flushLocked(FastPrintWriter.java:358)
    at com.android.internal.util.FastPrintWriter.appendLocked(FastPrintWriter.java:303)
    at com.android.internal.util.FastPrintWriter.write(FastPrintWriter.java:625)
    at com.android.internal.util.FastPrintWriter.append(FastPrintWriter.java:658)
    at java.io.PrintWriter.append(PrintWriter.java:691)
    at java.io.PrintWriter.append(PrintWriter.java:687)
    at java.io.Writer.append(Writer.java:198)
    at java.lang.Throwable.printStackTrace(Throwable.java:324)
    at java.lang.Throwable.printStackTrace(Throwable.java:300)
    at android.util.Log.getStackTraceString(Log.java:343)
    at com.android.internal.os.RuntimeInit.Clog_e(RuntimeInit.java:61)
    at com.android.internal.os.RuntimeInit.-wrap0(RuntimeInit.java)
    at com.android.internal.os.RuntimeInit$UncaughtHandler.uncaughtException(RuntimeInit.java:86)
    at java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:693)
    at java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:690)

这是活动和查看寻呼机的源代码：


初始化视图分页器：

fragments.add(new MonthFragment());
fragments.add(new MonthFragment());
fragments.add(new MonthFragment());
fragments.add(new MonthFragment());
fragments.add(new MonthFragment());
fragments.add(new MonthFragment());
setContentView(R.layout.activity_date_picker);
ViewPager viewPager = (ViewPager) findViewById(R.id.viewPager);
viewPager.setAdapter(new MonthAdapter(getSupportFragmentManager()));

1. The adapter:

class MonthAdapter extends FragmentStatePagerAdapter {

    public MonthAdapter(FragmentManager fm) {
        super(fm);
    }

    @Override
    public Fragment getItem(int position) {
        return fragments.get(position);
    }

    @Override
    public int getCount() {
        return fragments.size();
    }
}

1. Fragment with empty layout

public class MonthFragment extends Fragment {

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_month, container);
        return view;
    }

    @Override
    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"
    android:orientation="vertical">

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="test"/>
</LinearLayout>

最佳答案

inflate调用将新的MonthFragment添加到传入的容器中。

另外fragments.add（）也在做同样的事情。这将创建不正确的图形，从而导致内存用完。

使用inflater.inflate(R.layout.fragment_month, container, false);使xml膨胀，但不将其附加到视图。意味着fragments.add（）仅创建该片段的一个副本，并且一切正常。