Jetpack Compose中组件自定义(组件封装)

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Jetpack Compose中组件自定义(组件封装)

顶部导航

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import androidx.compose.foundation.clickable
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.BoxScope
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.padding
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.clip
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import com.xhkjedu.zxs_android.common.CommonTheme


@Composable
public fun PageTopBar(
    title: String,
    showBack: Boolean = true,
    backAction: () -> Unit,
    content: @Composable BoxScope.() -> Unit
) {
    Box(
        modifier = Modifier
            .fillMaxWidth()
            .height(44.dp)
            .padding(start = 24.dp, end = 24.dp),
    ) {
        if (showBack) {
            Row(
                modifier = Modifier
                    .align(Alignment.CenterStart)
                    .clip(CommonTheme.CornerXs)
                    .clickable {
                        backAction()
                    },
                verticalAlignment = Alignment.CenterVertically
            ) {
                IconFont(icon = IconFont.IconFanhui2, size = 18f)
                Text("返回", fontSize = 18.sp)
            }
        }
        
        Text(
            title,
            modifier = Modifier.align(Alignment.Center),
            fontSize = 20.sp,
            color = Color.Black
        )

        Box(
            modifier = Modifier
                .align(Alignment.CenterEnd),
        ) {
            content()
        }

    }
}

使用

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PageTopBar(title = "教材同步练", backAction = {
    navController.popBackStack()
}) {
    Row(verticalAlignment = Alignment.CenterVertically) {
        Text("数学")
        IconFont(icon = IconFont.IconXiala)
    }
}

页面外层布局

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import androidx.annotation.DrawableRes
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.BoxScope
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.ColumnScope
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.navigationBarsPadding
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.statusBarsPadding
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import com.xhkjedu.zxs_android.common.ZTheme
import com.xhkjedu.zxs_android.componts.common.ZSpaceVS
import com.xhkjedu.zxs_android.componts.common.image.ZImgLocalBg

@Composable
fun ZScreenOuterComp(
    @DrawableRes bg: Int,
    header: @Composable ColumnScope.() -> Unit,
    content: @Composable BoxScope.() -> Unit
) {
    Box(Modifier.fillMaxSize()) {
        Box(modifier = Modifier.fillMaxSize()) {
            ZImgLocalBg(bg)
        }
        Column(
            modifier = Modifier
                .statusBarsPadding()
                .navigationBarsPadding()
                .fillMaxSize()
        ) {
            header()
            ZSpaceVS()
            Box(
                modifier = Modifier
                    .padding(horizontal = ZTheme.SpaceLr)
                    .fillMaxWidth()
                    .weight(1f)
            ) {
                content()
            }
            ZSpaceVS()
        }
    }
}

注意

navigationBarsPadding 底部的边距在模拟器上是0.dp，我这在真机上是8.dp。