Question

我有这段代码：

ArrayList<ArrayList<String>> row = new ArrayList<ArrayList<String>>();
ArrayList<String> column = new ArrayList<String>();

我的问题是我无法添加String。如何从TextView（在Android中）添加String？

Answer 1

假设您已在xml中声明了TextView（将myTextView替换为TextView的ID）：

TextView tv = (TextView) findViewById(R.id.myTextView);
int index = 0;//change to index in row that you want to modify
String text = tv.getText().toString();
ArrayList<String> col = row.get(index);
if (col == null) {
    col = new ArrayList<String>();
    col.add(text);
    row.add(col);
}
else {
    col.add(text);
}

Answer 2

ArrayList<ArrayList<String>> row = new ArrayList<ArrayList<String>>();
ArrayList<String> column = new ArrayList<String>();
row.add(column);
column.add(myString);

String theString = row.get(0).get(0);

如何将字符串添加到嵌套的Arraylist？

2 个答案: