LogUtil

import android.util.Log;

public class LogUtil {

	public static final void printLog(boolean e, String val) {
		StackTraceElement ste = new Throwable().getStackTrace()[1];
		String clazzName = ste.getClassName();
		String methodName = ste.getMethodName();
		int line = ste.getLineNumber();
		String title = clazzName + "." + methodName + "(" + line + ")";
		LogUtil.printTooLongLog(e, title, val);
	}

	public static void printTooLongLog(boolean e, String tag, String sb) {
		if (sb.length() > 4000) {
			int chunkCount = sb.length() / 4000; // integer division
			for (int i = 0; i <= chunkCount; i++) {
				int max = 4000 * (i + 1);
				if (max >= sb.length()) {
					print(e, tag, sb.substring(4000 * i));
				} else {
					print(e, tag, sb.substring(4000 * i, max));
				}
			}
		} else {
			print(e, tag, sb.toString());
		}
	}

	private static void print(boolean e, String tag, String msg) {
		if (e) {
			Log.e(tag, msg);
		} else {
			Log.d(tag, msg);
		}
	}

	public static boolean isLogOut() {
		return Log.isLoggable("tag", Log.VERBOSE);
	}

	public static String getStackMsg(Exception e) {

		StringBuffer sb = new StringBuffer();
		StackTraceElement[] stackArray = e.getStackTrace();
		for (int i = 0; i < stackArray.length; i++) {
			StackTraceElement element = stackArray[i];
			sb.append(element.toString() + "\n");
		}
		return sb.toString();
	}

	public static String getStackMsg(Throwable e) {

		StringBuffer sb = new StringBuffer();
		StackTraceElement[] stackArray = e.getStackTrace();
		for (int i = 0; i < stackArray.length; i++) {
			StackTraceElement element = stackArray[i];
			sb.append(element.toString() + "\n");
		}
		return sb.toString();
	}

	public static void printStack() {
		boolean DEBUG_PRINT_STACK = true;
		if (DEBUG_PRINT_STACK) {
			Throwable ex = new Throwable();

			StackTraceElement[] stackElements = ex.getStackTrace();
			if (stackElements != null) {
				for (int i = 0; i < stackElements.length; i++) {
					System.out.println("文件名：" + stackElements[i].getFileName() + ", 类名：" + stackElements[i].getClassName() + ",方法名："
							+ stackElements[i].getMethodName() + "行：(" + stackElements[i].getLineNumber() + ")");
				}
			}
		}
	}
}