APP闪退，日志如下：

APP闪退，
看提示这大致的意思是内存不够？应该怎么解决？百度查了下有文章说在manifest.xml中添加一个属性：android:largeHeap="true"，这个manifest.xml在哪里？应该怎么加？

日志如下：

BOARD:rk30sdk  
BOOTLOADER:unknown  
BRAND:Android  
CPU_ABI:armeabi-v7a  
CPU_ABI2:armeabi  
DEVICE:rk3288_box  
DISPLAY:F4932QA_FF62542000536AF0_HDMI_V2.0_20200612  
FINGERPRINT:Android/rk3288_box/rk3288_box:5.1.1/LMY49F/mazhiguang06120720:userdebug/test-keys  
HARDWARE:rk30board  
HOST:ubuntu138  
ID:LMY49F  
IS_DEBUGGABLE:true  
MANUFACTURER:rockchip  
MODEL:rk3288_box  
PRODUCT:rk3288_box  
RADIO:unknown  
SERIAL:FE3210025736  
SUPPORTED_32_BIT_ABIS:[Ljava.lang.String;@33cefce1  
SUPPORTED_64_BIT_ABIS:[Ljava.lang.String;@17346a06  
SUPPORTED_ABIS:[Ljava.lang.String;@204328c7  
TAG:Build  
TAGS:test-keys  
TIME:1591946536000  
TYPE:userdebug  
UNKNOWN:unknown  
USER:mazhiguang  
java.lang.OutOfMemoryError: Failed to allocate a 193331982 byte allocation with 16777216 free bytes and 146MB until OOM  
    at java.lang.AbstractStringBuilder.enlargeBuffer(AbstractStringBuilder.java:95)  
    at java.lang.AbstractStringBuilder.append0(AbstractStringBuilder.java:133)  
    at java.lang.StringBuilder.append(StringBuilder.java:124)  
    at org.json.JSONStringer.string(JSONStringer.java:344)  
    at org.json.JSONStringer.value(JSONStringer.java:252)  
    at org.json.JSONObject.quote(JSONObject.java:766)  
    at io.dcloud.common.util.JSONUtil.toJSONableString(Unknown Source)  
    at io.dcloud.js.file.FileFeatureImpl$1.onExecuting(Unknown Source)  
    at io.dcloud.common.adapter.util.AsyncTaskHandler$1.run(Unknown Source)  
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)  
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)  
    at java.lang.Thread.run(Thread.java:818)