Android: Is there an idiom for Iterating through a SparseArray

I'm using a list of unique int ids against a list of user names as a fast lookup t开发者_JAVA百科able and decided to use the sparseArray but I would like to be able print to log the entire list from time to time for debugging purposes.

The SparseArray is not iterable and isn't much like the util.Map interface

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Mice was correct, code would look something like this;

for(int i = 0; i < sparseArray.size(); i++){
    int key = sparseArray.keyAt(i);
    Object value = sparseArray.valueAt(i);
}

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Use SparseArray.size() to get total size.

Use SparseArray.keyAt and valueAt to get key/value in given index.

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Here's how to display a SparseArray content for debug traces.

public static String sparseArrayToString(SparseArray<?> sparseArray) {
    StringBuilder result = new StringBuilder();
    if (sparseArray == null) {
        return "null";
    }

    result.append('{');
    for (int i = 0; i < sparseArray.size(); i++) {
        result.append(sparseArray.keyAt(i));
        result.append(" => ");
        if (sparseArray.valueAt(i) == null) {
            result.append("null");
        } else {
            result.append(sparseArray.valueAt(i).toString());
        }
        if(i < sparseArray.size() - 1) {
            result.append(", ");
        }
    }
    result.append('}');
    return result.toString();
}