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          Android 框架簡(jiǎn)介

          作者: 時(shí)間:2016-09-12 來源:網(wǎng)絡(luò) 收藏

          * significant work and incurring significant overhead.

          */

          public final class Log {

          /**

          * Priority constant for the println method; use Log.v.

          */

          public static final int VERBOSE = 2;

          /**

          * Priority constant for the println method; use Log.d.

          */

          public static final int DEBUG = 3;

          /**

          * Priority constant for the println method; use Log.i.

          */

          public static final int INFO = 4;

          /**

          * Priority constant for the println method; use Log.w.

          */

          public static final int WARN = 5;

          /**

          * Priority constant for the println method; use Log.e.

          */

          public static final int ERROR = 6;

          /**

          * Priority constant for the println method.

          */

          public static final int ASSERT = 7;

          /**

          * Exception class used to capture a stack trace in {@link #wtf()}.

          */

          private static class TerribleFailure extends Exception {

          TerribleFailure(String msg, Throwable cause) { super(msg, cause); }

          }

          private Log() {

          }

          /**

          * Send a {@link #VERBOSE} log message.

          * @param tag Used to identify the source of a log message. It usually identifies

          * the class or activity where the log call occurs.

          * @param msg The message you would like logged.

          */

          public static int v(String tag, String msg) {

          return println_native(LOG_ID_MAIN, VERBOSE, tag, msg);

          }

          /**

          * Send a {@link #VERBOSE} log message and log the exception.

          * @param tag Used to identify the source of a log message. It usually identifies

          * the class or activity where the log call occurs.

          * @param msg The message you would like logged.

          * @param tr An exception to log

          */

          public static int v(String tag, String msg, Throwable tr) {

          return println_native(LOG_ID_MAIN, VERBOSE, tag, msg + '/n' + getStackTraceString(tr));

          }

          /**

          * Send a {@link #DEBUG} log message.

          * @param tag Used to identify the source of a log message. It usually identifies

          * the class or activity where the log call occurs.

          * @param msg The message you would like logged.

          */

          public static int d(String tag, String msg) {

          return println_native(LOG_ID_MAIN, DEBUG, tag, msg);

          }

          /**

          * Send a {@link #DEBUG} log message and log the exception.

          * @param tag Used to identify the source of a log message. It usually identifies

          * the class or activity where the log call occurs.

          * @param msg The message you would like logged.

          * @param tr An exception to log

          */

          public static int d(String tag, String msg, Throwable tr) {

          return println_native(LOG_ID_MAIN, DEBUG, tag, msg + '/n' + getStackTraceString(tr));

          }

          /**

          * Send an {@link #INFO} log message.

          * @param tag Used to identify the source of a log message. It usually identifies

          * the class or activity where the log call occurs.

          * @param msg The message you would like logged.

          */

          public static int i(String tag, String msg) {

          return println_native(LOG_ID_MAIN, INFO, tag, msg);

          }

          /**

          * Send a {@link #INFO} log message and log the exception.

          * @param tag Used to identify the source of a log message. It usually identifies

          * the class or activity where the log call occurs.

          * @param msg The message you would like logged.

          * @param tr An exception to log

          */

          public static int i(String tag, String msg, Throwable tr) {

          return println_native(LOG_ID_MAIN, INFO, tag, msg + '/n' + getStackTraceString(tr));

          }

          /**

          * Send a {@link #WARN} log message.

          * @param tag Used to identify the source of a log message. It usually identifies

          * the class or activity where the log call occurs.

          * @param msg The message you would like logged.

          */

          public static int w(String tag, String msg) {

          return println_native(LOG_ID_MAIN, WARN, tag, msg);

          }

          /**

          * Send a {@link #WARN} log message and log the exception.

          * @param tag Used to identify the source of a log message. It usually identifies

          * the class or activity where the log call occurs.

          * @param msg The message you would like logged.

          * @param tr An exception to log

          */

          public static int w(String tag, String msg, Throwable tr) {

          return println_native(LOG_ID_MAIN, WARN, tag, msg + '/n' + getStackTraceString(tr));

          }

          /**

          * Checks to see whether or not a log for the specified tag is loggable at the specified level.

          *

          * The default level of any tag is set to INFO. This means that any level above and including



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