Android 实例代码带你掌握FrameLayout

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="Http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:foreground="@mipmap/ic_launcher"
    android:foregroundGravity="left">
 
    <Button
        android:layout_width="340dp"
        android:layout_height="570dp"
        android:text="按钮1"
        android:background="#A0230E"
        />
 
    <Button
        android:layout_width="250dp"
        android:layout_height="220dp"
        android:text="按钮2"
        android:background="#0A6188"
        />
 
</FrameLayout>

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
 
    <ImageView
        android:id="@+id/p1"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:src="@drawable/p1"
        android:scaleType="fitCenter"
        android:visibility="Gone"
        />
    <ImageView
        android:id="@+id/p2"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:src="@drawable/p2"
        android:scaleType="fitCenter"
        android:visibility="gone"
        />
    <ImageView
        android:id="@+id/p3"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:src="@drawable/p3"
        android:scaleType="fitCenter"
        android:visibility="gone"
        />
    <ImageView
        android:id="@+id/p4"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:src="@drawable/p4"
        android:scaleType="fitCenter"
        android:visibility="visible"
        />
 
 
</FrameLayout>

package com.example.myapplication;
 
import androidx.appcompat.app.AppCompatActivity;
 
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;
import android.widget.Toolbar;
 
public class MainActivity extends AppCompatActivity implements View.OnClickListener{
    private ImageView p1,p2,p3,p4;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        p1=(ImageView)this.findViewById(R.id.p1);
        p1.setOnClickListener(this);
        p2=(ImageView)this.findViewById(R.id.p2);
        p2.setOnClickListener(this);
        p3=(ImageView)this.findViewById(R.id.p3);
        p3.setOnClickListener(this);
        p4=(ImageView)this.findViewById(R.id.p4);
        p4.setOnClickListener(this);
 
    }
 
    @Override
    public void onClick(View view) {
        int id= view.getId();
        switch (id){
            case R.id.p1:
                p1.setVisibility(View.GONE);
                p2.setVisibility(View.VISIBLE);
                break;
            case R.id.p2:
                p2.setVisibility(View.GONE);
                p3.setVisibility(View.VISIBLE);
                break;
            case R.id.p3:
                p3.setVisibility(View.GONE);
                p4.setVisibility(View.VISIBLE);
                break;
            case R.id.p4:
                p4.setVisibility(View.GONE);
                p1.setVisibility(View.VISIBLE);
                break;
        }
    }
}