Hey there! I see you're having trouble with your EditText getting compressed (and its content hidden) when the soft keyboard pops up in your Android to-do app. Let's break down why this happens and fix it step by step.

Your layout uses LinearLayout with weight distribution: the top input area (EditText + Button) has a weight of 1, and the RecyclerView has a weight of 6. By default, when the soft keyboard appears, Android uses adjustResize mode, which shrinks the entire layout to make room for the keyboard. Since the top area has a smaller weight, it gets squeezed down to almost nothing, causing your EditText to become unreadable.

方案1：调整软键盘行为（最快修复） #

The easiest way to fix this is to change how Android handles the soft keyboard for your MainActivity. We'll use the adjustPan mode, which slides the entire layout upward instead of compressing it when the keyboard pops up.

To do this, open your AndroidManifest.xml file, find the <activity> tag for MainActivity, and add the windowSoftInputMode attribute:

<activity
    android:name=".MainActivity"
    android:windowSoftInputMode="adjustPan">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>

This will keep your EditText visible by pushing the whole screen up when the keyboard appears, no layout changes needed!

方案2：优化LinearLayout布局结构 #

If you prefer to keep the weight-based layout but avoid compression, you can modify your activity_main.xml to fix the height of the top input area and let the RecyclerView fill the remaining space:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <!-- 固定顶部输入区域高度，不再使用权重 -->
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:padding="10dp">

        <EditText
            android:id="@+id/etItems"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="3"
            android:hint="ADD ITEMS"
            android:textColor="@android:color/black"
            android:textSize="24sp"
            android:minHeight="60dp"/> <!-- 确保EditText有最小高度，避免被压缩到不可见 -->

        <Button
            android:id="@+id/btnAdd"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:autoSizeTextType="uniform"
            android:text="ADD" />
    </LinearLayout>

    <!-- 让RecyclerView填充剩余屏幕空间 -->
    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/rvItems"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_margin="10dp" />
</LinearLayout>

Now the top input area stays at a readable size, and the RecyclerView will shrink instead when the keyboard pops up.

方案3：切换到ConstraintLayout（最灵活） #

For more control over your layout, consider using ConstraintLayout. It lets you pin the EditText to the top of the screen and have the RecyclerView fill the space below, so only the RecyclerView is affected by the keyboard:

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

    <EditText
        android:id="@+id/etItems"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_margin="10dp"
        android:hint="ADD ITEMS"
        android:textColor="@android:color/black"
        android:textSize="24sp"
        android:minHeight="60dp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toStartOf="@id/btnAdd"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintHorizontal_weight="3"/>

    <Button
        android:id="@+id/btnAdd"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_margin="10dp"
        android:autoSizeTextType="uniform"
        android:text="ADD"
        app:layout_constraintStart_toEndOf="@id/etItems"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="@id/etItems"
        app:layout_constraintHorizontal_weight="1"/>

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/rvItems"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_margin="10dp"
        app:layout_constraintTop_toBottomOf="@id/etItems"
        app:layout_constraintBottom_toBottomOf="parent"/>

</androidx.constraintlayout.widget.ConstraintLayout>

Start with 方案1 first—it's the quickest and requires the least changes. If adjustPan makes your layout shift too much for your liking, try 方案2 or 方案3 to restructure your layout for better behavior.

内容的提问来源于stack exchange，提问作者Hardik Dudeja