Created
February 18, 2023 19:38
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import android.os.Bundle | |
import androidx.activity.ComponentActivity | |
import androidx.activity.compose.setContent | |
import androidx.compose.foundation.interaction.InteractionSource | |
import androidx.compose.foundation.interaction.MutableInteractionSource | |
import androidx.compose.foundation.interaction.PressInteraction | |
import androidx.compose.foundation.layout.fillMaxSize | |
import androidx.compose.foundation.text.BasicTextField | |
import androidx.compose.material3.MaterialTheme | |
import androidx.compose.material3.Surface | |
import androidx.compose.runtime.* | |
import androidx.compose.ui.Modifier | |
import androidx.compose.ui.text.TextRange | |
import androidx.compose.ui.text.input.TextFieldValue | |
import com.test.composetextfieldselectiontest.ui.theme.ComposeTextFieldSelectionTestTheme | |
class MainActivity : ComponentActivity() { | |
override fun onCreate(savedInstanceState: Bundle?) { | |
super.onCreate(savedInstanceState) | |
setContent { | |
ComposeTextFieldSelectionTestTheme { | |
Surface( | |
modifier = Modifier.fillMaxSize(), | |
color = MaterialTheme.colorScheme.background | |
) { | |
CustomTextField() | |
} | |
} | |
} | |
} | |
} | |
@Composable | |
fun CustomTextField() { | |
val textFieldValue = remember { | |
mutableStateOf(TextFieldValue("")) | |
} | |
val interactionSource = remember { MutableInteractionSource() } | |
val isDoubleTap by interactionSource.collectIsDoubleTapAsState() | |
LaunchedEffect(isDoubleTap) { | |
val endRange = if (isDoubleTap) textFieldValue.value.text.length else 0 | |
textFieldValue.value = | |
textFieldValue.value.copy( | |
selection = TextRange( | |
start = 0, | |
end = endRange | |
) | |
) | |
} | |
BasicTextField( | |
value = textFieldValue.value, | |
onValueChange = { | |
if (!isDoubleTap) { | |
textFieldValue.value = it | |
} | |
}, | |
interactionSource = interactionSource | |
) | |
} | |
@Composable | |
fun InteractionSource.collectIsDoubleTapAsState(): State<Boolean> { | |
val isDoubleTap = remember { mutableStateOf(false) } | |
var firstInteractionTimeInMillis = 0L | |
LaunchedEffect(this) { | |
interactions.collect { interaction -> | |
when (interaction) { | |
is PressInteraction.Press -> { | |
val pressTimeInMillis = System.currentTimeMillis() | |
if (pressTimeInMillis - firstInteractionTimeInMillis <= 500L) { | |
firstInteractionTimeInMillis = 0 | |
isDoubleTap.value = true | |
} else { | |
firstInteractionTimeInMillis = System.currentTimeMillis() | |
isDoubleTap.value = false | |
} | |
} | |
} | |
} | |
} | |
return isDoubleTap | |
} |
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