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JetpackComposeでガラケー風の入力用テンキーを作ってみた

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ソースコード

@Composable
fun T9Keypad() {
    val keys = listOf(
        listOf("1", ""), listOf("2", "ABC"), listOf("3", "DEF"),
        listOf("4", "GHI"), listOf("5", "JKL"), listOf("6", "MNO"),
        listOf("7", "PQRS"), listOf("8", "TUV"), listOf("9", "WXYZ"),
        listOf("*", ""), listOf("0", "+"), listOf("#", "")
    )

    Column {
        for (row in keys.chunked(3)) {
            Row(
                modifier = Modifier
                    .fillMaxWidth()
                    .padding(vertical = 2.dp),
                horizontalArrangement = Arrangement.SpaceEvenly
            ) {
                row.forEach { (num, letters) ->
                    Column(
                        horizontalAlignment = Alignment.CenterHorizontally,
                        modifier = Modifier
                            .size(64.dp)
                            .border(1.dp, Color.White)
                            .padding(4.dp)
                    ) {
                        Text(text = num, color = Color.White, fontSize = 20.sp)
                        if (letters.isNotEmpty()) {
                            Text(text = letters, color = Color.Gray, fontSize = 10.sp)
                        }
                    }
                }
            }
        }
    }
}

Screenshot_20250913_213340.png

軽く解説

・3×4 のテンキーUI
・数字とアルファベット(ABCなど)を表示(矢印などを追加してPC用のテンキーにしてもいいかも)
・クリック等処理部分は未実装

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