Android - 从 HashMap 中获取值

Android - Get value from HashMap(Android - 从 HashMap 中获取值)

问题描述

我曾尝试在 Android 中搜索 HashMap，但遇到问题:

I have tried to search on HashMap in Android, but getting problem:

考虑这个例子:

HashMap<String, String> meMap=new HashMap<String, String>();
meMap.put("Color1","Red");
meMap.put("Color2","Blue");
meMap.put("Color3","Green");
meMap.put("Color4","White");

现在我想对其进行迭代并获取每种颜色的值并希望在Toast"中显示.如何显示?

now I want to iterate it and get the value of each color and want to display in "Toast". how do I display it?

推荐答案

Iterator myVeryOwnIterator = meMap.keySet().iterator();
while(myVeryOwnIterator.hasNext()) {
    String key=(String)myVeryOwnIterator.next();
    String value=(String)meMap.get(key);
    Toast.makeText(ctx, "Key: "+key+" Value: "+value, Toast.LENGTH_LONG).show();
}

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