今天写代码的时候,服务器返回的json数据量比较大,然后我想在logcat中完全输出服务器返回的Json格式的字符串事,发现logcat中返回的信息中明显少了后面一节,刚开始还以为程序有bug,调试了好半天才发现原来程序没有bug,而是LogCat中的每次的Msg输出是有上限的,坑的我好惨啊,查了资料才发现,.原来logcat在实现上对于message的内存分配大概是4k左右.所以超过的内容都直接被丢弃;
于是自己封装了一个属于自己的LogUtil类,代码如下:
public class LogUtil {
//可以全局控制是否打印log日志
private static boolean isPrintLog = true;
private static int LOG_MAXLENGTH = 2000;
public static void v(String msg) {
v("LogUtil", msg);
}
public static void v(String tagName, String msg) {
if (isPrintLog) {
int strLength = msg.length();
int start = 0;
int end = LOG_MAXLENGTH;
for (int i = 0; i < 100; i++) {
if (strLength > end) {
Log.v(tagName + i, msg.substring(start, end));
start = end;
end = end + LOG_MAXLENGTH;
} else {
Log.v(tagName + i, msg.substring(start, strLength));
break;
}
}
}
}
public static void d(String msg) {
d("LogUtil", msg);
}
public static void d(String tagName, String msg) {
if (isPrintLog) {
int strLength = msg.length();
int start = 0;
int end = LOG_MAXLENGTH;
for (int i = 0; i < 100; i++) {
if (strLength > end) {
Log.d(tagName + i, msg.substring(start, end));
start = end;
end = end + LOG_MAXLENGTH;
} else {
Log.d(tagName + i, msg.substring(start, strLength));
break;
}
}
}
}
public static void i(String msg) {
i("LogUtil", msg);
}
public static void i(String tagName, String msg) {
if (isPrintLog) {
int strLength = msg.length();
int start = 0;
int end = LOG_MAXLENGTH;
for (int i = 0; i < 100; i++) {
if (strLength > end) {
Log.i(tagName + i, msg.substring(start, end));
start = end;
end = end + LOG_MAXLENGTH;
} else {
Log.i(tagName + i, msg.substring(start, strLength));
break;
}
}
}
}
public static void w(String msg) {
w("LogUtil", msg);
}
public static void w(String tagName, String msg) {
if (isPrintLog) {
int strLength = msg.length();
int start = 0;
int end = LOG_MAXLENGTH;
for (int i = 0; i < 100; i++) {
if (strLength > end) {
Log.w(tagName + i, msg.substring(start, end));
start = end;
end = end + LOG_MAXLENGTH;
} else {
Log.w(tagName + i, msg.substring(start, strLength));
break;
}
}
}
}
public static void e(String msg) {
e("LogUtil", msg);
}
public static void e(String tagName, String msg) {
if (isPrintLog) {
int strLength = msg.length();
int start = 0;
int end = LOG_MAXLENGTH;
for (int i = 0; i < 100; i++) {
if (strLength > end) {
Log.e(tagName + i, msg.substring(start, end));
start = end;
end = end + LOG_MAXLENGTH;
} else {
Log.e(tagName + i, msg.substring(start, strLength));
break;
}
}
}
}
}
转自:https://blog.csdn.net/abc6368765/article/details/50474218