1.添加日志工具类

corelib/src/main/java/com/xhly/corelib/utils/LogUtils.java

+package com.xhly.corelib.utils;
+
+import android.util.Log;
+
+public class LogUtils {
+    public static String TAG = "LogUtils";
+    private static final boolean DEBUG = true;
+
+    private static final int D = 745;
+    private static final int E = 421;
+    private static final int V = 674;
+    private static final String CUT_OFF = "------------------------";
+    private static final String CUT_OFF_END = "----------------------" +
+            "--------------------------------------------------------";
+    private static final String SPACE_9 = "         ";
+
+
+    public static void d(String tag, String... values) {
+        printf(D, tag, values);
+    }
+
+    public static void e(String tag, String... values) {
+        printf(E, tag, values);
+    }
+
+    public static void v(String tag, String... values) {
+        printf(V, tag, values);
+    }
+
+    private static void printf(int mark, String tag, String... values) {
+        if (!DEBUG) {
+            return;
+        }
+
+        //需要打印的内容
+        StringBuffer value = new StringBuffer();
+        for (int i = 0; i < values.length; i++) {
+            value.append(values[i]);
+            if (i == values.length - 1) {
+                break;
+            }
+            value.append(", ");
+        }
+
+        // 打印
+        switch (mark) {
+            case D:
+
+                printfLine(D, tag);
+                Log.d(tag, SPACE_9 + value.toString());
+                Log.d(tag, CUT_OFF_END);
+
+                break;
+            case E:
+                printfLine(E, tag);
+
+                Log.e(tag, SPACE_9 + value.toString());
+                Log.e(tag, CUT_OFF_END);
+
+                break;
+            case V:
+                printfLine(V, tag);
+
+                Log.v(tag, SPACE_9 + value.toString());
+                Log.v(tag, CUT_OFF_END);
+
+                break;
+        }
+
+
+    }
+
+    private static String getPosition(String tag) {
+        StringBuilder sb = new StringBuilder();
+        StackTraceElement element = getTargetStack(tag);
+
+        if (null == element) {
+            return null;
+        }
+
+        //sb.append(".")// 我电脑的AndroidStudio有点问题，必须在这加个点，在logcat中才能定位。Androidstudio升级后，这个问题不存在了。
+        sb.append("(")
+                .append(element.getFileName())
+                .append(":")
+                .append(element.getLineNumber())
+                .append(")");
+        return sb.toString();
+    }
+
+    private static void printfLine(int mark, String tag) {
+        String startLine = CUT_OFF + getPosition(tag) + CUT_OFF;
+
+        switch (mark) {
+            case D:
+
+                Log.d(tag, " ");
+                Log.d(tag, startLine);
+
+                break;
+            case E:
+                Log.e(tag, " ");
+                Log.e(tag, startLine);
+                break;
+            case V:
+                Log.v(tag, " ");
+                Log.v(tag, startLine);
+                break;
+        }
+
+
+    }
+
+    /**
+     * 获取最后调用我们log的StackTraceElement
+     *
+     * @param tag 目标类的SimpleName
+     * @return
+     */
+
+    private static StackTraceElement getTargetStack(String tag) {
+
+        for (StackTraceElement element : Thread.currentThread().getStackTrace()) {
+
+            if (element.getClassName().contains(tag)) {
+                //返回调用位置的 element
+                return element;
+
+            }
+
+        }
+
+        return null;
+    }
+
+}