Android Log类中方法的使用

public class LogActivity extends AppCompatActivity {
    private final static String TAG="LogActivity";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_log);
        Log.e(TAG,"输出错误日志");
        Log.w(TAG,"输出警告日志");
        Log.i(TAG,"输出普通日志");
        Log.d(TAG,"输出调试日志");
        Log.v(TAG,"输出冗余日志");
    }
}