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android 的几个黄色警告解决办法(转)

转自:http://my.eoe.cn/864234/archive/5162.html

1：Handler

    // This Handler class should be static or leaks might occur: IncomingHandler
    @SuppressLint("HandlerLeak")
    private Handler mHandler = new Handler() {
        @Override
        public void handleMessage(Message msg) {

        };
    };

解决方法：

    private Handler mHandler = new Handler(new Handler.Callback() {
        @Override
        public boolean handleMessage(Message msg) {
            return false;
        }
    });

警告原因：

2：SimpleDateFormat

    // To get local formatting use getDateInstance(), getDateTimeInstance(), or
    // getTimeInstance(), or use new SimpleDateFormat(String template, Locale
    // locale) with for example Locale.US for ASCII dates.
    @SuppressLint("SimpleDateFormat")
    SimpleDateFormat simpleDateFormat = new SimpleDateFormat(
            "yyyy-MM-ddHH:mm:ss");

解决方法：

1 2	SimpleDateFormat newSimpleDateFormat = new SimpleDateFormat( "yyyy年MM月dd日HH时mm分", Locale.getDefault());

警告原因：

**3：new HashMap() **

1 2	@SuppressLint("UseSparseArrays") public static Map<Integer, String> CMD_MAP = new HashMap<Integer, String>();

解决方法：

 //TODO

警告原因：Use new SparseArray(...) instead for better performance

4："String".toUpperCase(); "String".toLowerCase();

1 2	@SuppressLint("DefaultLocale") boolean b = "String".toUpperCase().equals("STRING");

解决方法：

1	boolean b = "String".equalsIgnoreCase("STRING");

警告原因：Implicitly using the default locale is a common source of bugs: Use toUpperCase(Locale) instead

文章来自：http://www.cnblogs.com/qq78292959/p/4391550.html