About the largeheap attribute

Recently, I was studying a project , But the pictures and APP The running memory of is much larger than Android designated 16M Run memory size .

Then Xiaobai asked the gods how to prevent APP OOM error .

So a group of inner gods gave me a clear way .

 <application
        android:allowBackup="true"
        android:icon="@mipmap/icon_app"
        android:label="@string/app_name"
        android:largeHeap="true"
        android:theme="@style/AppTheme">
</application>

This is the sentence largeHeap Helped me solve this problem temporarily .

But usually these good things have two sides , Of course, it's better to use less , About OOM There are more solutions . This is only an expedient .

// The following is Baidu literature

We can do it in AndroidManifest.xml Of application Tag by setting application Under the android:largeHeap attribute ="true"

To inform Dalvik Virtual machine applications need to use larger Java Object Heap.

in fact , On mobile phones with limited memory , Even if we put an application android:largeHeap Property is set to “true”,

It can't be increased Java Object Heap The size of the , Even though it can be increased by this attribute Java Object Heap Size , In general, this attribute should not be used .

In order to improve the overall experience of the system , What we need to do is to reduce the memory requirements of applications , Instead of adding more applications Java Object Heap Size , After all, the total available memory of the system is fixed , An application is used more , It means that other applications are used less .