android studio 页面内点击方法无法跳转 android studio怎么点击button跳转页面

0）提示

• 页面跳转时出现黑屏闪退的情况，可以参考这篇文章
• 网页跳转需要手机联网，可以参考这篇文章，如果还不行的话，换成高版本的模拟机再试试

 

1）页面跳转

Btn1=findViewById(R.id.btn_1);
        Btn1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent=new Intent(MainActivity.this,nextActivity.class);
                startActivity(intent);
            }
        });

　　

2）网页跳转

Btn2=findViewById(R.id.btn_2);

final Uri uri=Uri.parse("https://home*****.com/u/kori/");

Btn2.setOnClickListener(new View.OnClickListener() {

    @Override

    public void onClick(View v) {

        Intent intent=new Intent(Intent.ACTION_VIEW,uri);

        startActivity(intent);

    }

});

3）完整代码

activity_main.xml:

<?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">

    <Button
        android:id="@+id/btn_1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="JUMP"
        android:textSize="20sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.529"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.382" />

    <Button
        android:id="@+id/btn_2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="120dp"
        android:text="WEB"
        android:textSize="20sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.529"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/btn_1" />
</androidx.constraintlayout.widget.ConstraintLayout>

　　

next.xml:（准备跳转到页面的布局）

<?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">

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="SUCCESS！"
        android:textStyle="bold"
        android:textSize="20sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>

　　

MainActivity.java:

package com.example.jumpto;

  
import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;

import android.net.Uri;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

  
public class MainActivity extends AppCompatActivity {

  
    Button Btn1,Btn2;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

  
        Btn1=findViewById(R.id.btn_1);

        Btn1.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                Intent intent=new Intent(MainActivity.this,nextActivity.class);

                startActivity(intent);

            }

        });

  
        Btn2=findViewById(R.id.btn_2);

        final Uri uri=Uri.parse("https://home.****.com/u/kori/");

        Btn2.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                Intent intent=new Intent(Intent.ACTION_VIEW,uri);

                startActivity(intent);

            }

        });

    }

}

　　

nextActivity.java:

package com.example.jumpto;

import android.os.Bundle;
import android.widget.Button;
import androidx.appcompat.app.AppCompatActivity;

public class nextActivity extends AppCompatActivity {

        Button Btn1;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.next);
        }
    }

　　

4）结果呈现