android中logcat打印输出结果不完整,超出上限

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