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首页 > 解决方案 > 主 Activity 文件中的渲染问题 - Android Studio

android - 主 Activity 文件中的渲染问题 - Android Studio

问题描述

渲染问题发生在主要活动中。此问题不会影响应用程序的可用性，但会使调整主 Activity 中包含的布局变得非常困难。没有更多信息可用于此问题，我尝试跟踪堆栈跟踪但没有运气。

** 评论要求的图像：** 布局问题 - 渲染问题

这是完整的堆栈跟踪

堆栈跟踪

java.lang.NullPointerException
    at android.view.ViewGroup.brokenDispatchApplyWindowInsets(ViewGroup.java:7200)
    at android.view.ViewGroup.dispatchApplyWindowInsets(ViewGroup.java:7193)
    at android.view.ViewGroup.brokenDispatchApplyWindowInsets(ViewGroup.java:7203)
    at android.view.ViewGroup.dispatchApplyWindowInsets(ViewGroup.java:7193)
    at android.view.ViewGroup.brokenDispatchApplyWindowInsets(ViewGroup.java:7203)
    at android.view.ViewGroup.dispatchApplyWindowInsets(ViewGroup.java:7193)
    at android.view.ViewGroup.brokenDispatchApplyWindowInsets(ViewGroup.java:7203)
    at android.view.ViewGroup.dispatchApplyWindowInsets(ViewGroup.java:7193)
    at android.view.ViewGroup.brokenDispatchApplyWindowInsets(ViewGroup.java:7203)
    at android.view.ViewGroup.dispatchApplyWindowInsets(ViewGroup.java:7193)
    at android.view.ViewRootImpl.dispatchApplyInsets(ViewRootImpl.java:1925)
    at android.view.ViewRootImpl_Accessor.dispatchApplyInsets(ViewRootImpl_Accessor.java:24)
    at com.android.layoutlib.bridge.impl.Layout.requestFitSystemWindows(Layout.java:385)
    at android.view.View.requestFitSystemWindows(View.java:10796)
    at android.view.View.requestFitSystemWindows(View.java:10796)
    at android.view.View.requestFitSystemWindows(View.java:10796)
    at android.view.View.requestFitSystemWindows(View.java:10796)
    at android.view.View.requestApplyInsets(View.java:10804)
    at androidx.core.view.ViewCompat.requestApplyInsets(ViewCompat.java:2426)
    at androidx.core.view.ViewCompat$Api21Impl$1.onApplyWindowInsets(ViewCompat.java:4774)
    at android.view.View.dispatchApplyWindowInsets(View.java:10514)
    at android.view.ViewGroup.dispatchApplyWindowInsets(ViewGroup.java:7191)
    at android.view.ViewGroup.brokenDispatchApplyWindowInsets(ViewGroup.java:7203)
    at android.view.ViewGroup.dispatchApplyWindowInsets(ViewGroup.java:7193)
    at android.view.ViewGroup.brokenDispatchApplyWindowInsets(ViewGroup.java:7203)
    at android.view.ViewGroup.dispatchApplyWindowInsets(ViewGroup.java:7193)
    at android.view.ViewGroup.brokenDispatchApplyWindowInsets(ViewGroup.java:7203)
    at android.view.ViewGroup.dispatchApplyWindowInsets(ViewGroup.java:7193)
    at android.view.ViewGroup.brokenDispatchApplyWindowInsets(ViewGroup.java:7203)
    at android.view.ViewGroup.dispatchApplyWindowInsets(ViewGroup.java:7193)
    at android.view.ViewRootImpl.dispatchApplyInsets(ViewRootImpl.java:1925)
    at android.view.ViewRootImpl_Accessor.dispatchApplyInsets(ViewRootImpl_Accessor.java:24)
    at com.android.layoutlib.bridge.impl.Layout.requestFitSystemWindows(Layout.java:385)
    at android.view.View.requestFitSystemWindows(View.java:10796)
    at android.view.View.requestFitSystemWindows(View.java:10796)
    at android.view.View.requestFitSystemWindows(View.java:10796)
    at android.view.View.requestFitSystemWindows(View.java:10796)
    at android.view.View.requestApplyInsets(View.java:10804)
    at androidx.core.view.ViewCompat.requestApplyInsets(ViewCompat.java:2426)
    at com.google.android.material.internal.ViewUtils$4.onViewAttachedToWindow(ViewUtils.java:250)
    at android.view.View.dispatchAttachedToWindow(View.java:19586)
    at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:3430)
    at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:3437)
    at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:3437)
    at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:3437)
    at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:3437)
    at android.view.AttachInfo_Accessor.setAttachInfo(AttachInfo_Accessor.java:44)
    at com.android.layoutlib.bridge.impl.RenderSessionImpl.inflate(RenderSessionImpl.java:360)
    at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:404)
    at com.android.tools.idea.layoutlib.LayoutLibrary.createSession(LayoutLibrary.java:141)
    at com.android.tools.idea.rendering.RenderTask.createRenderSession(RenderTask.java:713)
    at com.android.tools.idea.rendering.RenderTask.lambda$inflate$6(RenderTask.java:844)
    at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1604)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)

XML 代码：

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    tools:context="com.team21.garageapplication.activity.MainActivity">

    <androidx.fragment.app.FragmentContainerView
        android:id="@+id/navHostMain"
        android:name="androidx.navigation.fragment.NavHostFragment"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:background="@color/md_grey_900"
        app:defaultNavHost="true"
        app:layout_constraintBottom_toTopOf="@+id/bottomNav"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:navGraph="@navigation/nav_graph" />

    <com.google.android.material.bottomnavigation.BottomNavigationView
        android:id="@+id/bottomNav"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_alignParentStart="true"
        android:layout_alignParentEnd="true"
        android:layout_alignParentBottom="true"
        android:background="@color/md_grey_900"
        app:itemIconTint="?attr/colorPrimaryDark"
        app:itemTextColor="?attr/colorPrimaryDark"
        app:labelVisibilityMode="labeled"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="@+id/navHostMain"
        app:layout_constraintStart_toStartOf="parent"
        app:menu="@menu/bottom_nav_menu" />


</androidx.constraintlayout.widget.ConstraintLayout>

主要活动代码：（如评论所建议）：

package com.team21.garageapplication.activity

import android.content.Intent
import android.os.Bundle
import android.util.Log
import android.view.View
import androidx.appcompat.app.AppCompatActivity
import androidx.navigation.NavController
import androidx.navigation.findNavController
import androidx.navigation.fragment.NavHostFragment
import androidx.navigation.fragment.findNavController
import androidx.navigation.ui.setupWithNavController
import com.team21.garageapplication.R
import com.team21.garageapplication.databinding.ActivityMainBinding
import com.team21.garageapplication.helper.SharedPreferenceHelper
import com.team21.garageapplication.misc.Constants
import com.team21.garageapplication.models.Garage
import dagger.hilt.android.AndroidEntryPoint

@AndroidEntryPoint
class MainActivity : AppCompatActivity() {


    private val TAG = "MainActivity"
    private lateinit var binding: ActivityMainBinding
    private lateinit var navController: NavController

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        binding = ActivityMainBinding.inflate(layoutInflater)
        setContentView(binding.root)
        Log.d(TAG, "onCreate Started")

        initNavigation()

        navigateToMapFragmentIfNeeded(intent)

        Log.d(TAG, "onCreate Ended")
    }

    override fun onNewIntent(intent: Intent?) {
        super.onNewIntent(intent)
        navigateToMapFragmentIfNeeded(intent)
    }


    override fun onSupportNavigateUp(): Boolean {
        navController = findNavController(R.id.navHostMain)
        return navController.navigateUp() || super.onSupportNavigateUp()
    }


    private fun visibilityNavElements(navController: NavController){
        navController.addOnDestinationChangedListener { _, destination, _ ->
            when(destination.id){
                R.id.catalog,
                R.id.employees,
                R.id.appList,
                R.id.executeApptFragment,
                R.id.currentAppointment -> binding.bottomNav.visibility = View.VISIBLE
                else -> {

                    binding.bottomNav.visibility = View.GONE
                }
            }
        }
    }

    private fun initNavigation(){
        val navHostFragment = supportFragmentManager.findFragmentById(R.id.navHostMain) as NavHostFragment
        navController = navHostFragment.navController

        binding.bottomNav.setupWithNavController(navController)
        binding.bottomNav.setOnNavigationItemReselectedListener {
            /* NO-OP */
        }

        visibilityNavElements(navController)

        val navGraph = navController.navInflater.inflate(R.navigation.nav_graph)
        if(SharedPreferenceHelper.getObject<Garage>(Constants.GARAGE_KEY) == null){
            navGraph.startDestination = R.id.selectGarageFragment
        }else{
            navGraph.startDestination = R.id.logInFragment
        }

        navController.graph = navGraph
    }

    private fun navigateToMapFragmentIfNeeded(intent: Intent?){
        if(intent?.action == Constants.ACTION_SHOW_MAP_FRAGMENT){
            val navHostFragment = supportFragmentManager.findFragmentById(R.id.navHostMain) as NavHostFragment
            navHostFragment.findNavController().navigate(R.id.actionGlobalMapFragment)
        }
    }
}

标签： androidxmlkotlinrender

解决方案

似乎您对 Android Studio 有问题，但不是应用程序本身。
请详细说明“难以调整布局”是什么意思需要更好地解释您的问题。

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