3.11

今天学习了安卓页面跳转机制
• 所花时间：3
• 代码行数：482
• 博客容量：1
• 代码如下：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <Button
        android:id="@+id/bt_fan"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="《"

        android:textSize="30sp"
        />

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:height="20dp"
        android:text="点击完成返回"
        />
    <Button
        android:id="@+id/bt_finish"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:height="50dp"
        android:text="完成"
        />

</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
    android:orientation="vertical"
    android:gravity="center">

    <Button
        android:id="@+id/bt_tiao"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:width="100dp"
        android:height="100dp"
        android:layout_gravity="center"
        android:text="跳转"
        />

</LinearLayout>

package com.example.chapter04;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;

public class actFinish extends AppCompatActivity implements View.OnClickListener {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_act_finish);
        findViewById(R.id.bt_fan).setOnClickListener(this);
        findViewById(R.id.bt_finish).setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        if(v.getId()==R.id.bt_fan || v.getId()==R.id.bt_finish)
            finish();
    }
}
package com.example.chapter04;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        findViewById(R.id.bt_tiao).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startActivity(new Intent(MainActivity.this,actFinish.class));
            }
        });
    }
}