5.27

今日总结

今日学习时间依然2h

package com.app.chapter03;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

import androidx.activity.EdgeToEdge;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.graphics.Insets;
import androidx.core.view.ViewCompat;
import androidx.core.view.WindowInsetsCompat;

import com.app.chapter03.utils.DateUtil;

public class ButtonLongClickActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        EdgeToEdge.enable(this);
        setContentView(R.layout.activity_button_long_click);
        Button btn_long_click_single = findViewById(R.id.btn_long_click_single);
        Button  btn_tiaozhuan =findViewById(R.id.btn_tiaozhuan);
        btn_tiaozhuan.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent= new Intent();
                intent.setClass(ButtonLongClickActivity.this,ScrollViewActivity.class);
                startActivity(intent);
            }
        });


//        TextView tv_result = findViewById(R.id.tv_result);
//        btn_long_click_single.setOnClickListener(v -> {
//            String desc =String.format("%s  您点击了按钮： %s", DateUtil.getNowTime(), ((Button)v).getText());
//            tv_result.setText(desc);
//
//        });

<?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:id="@+id/main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">


    <Button
        android:id="@+id/btn_long_click_single"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="指定长按的点击监听器"
        android:textColor="#000000"
        android:textSize="15sp"/>






    <TextView
        android:id="@+id/tv_result"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:padding="5dp"
        android:gravity="center"
        android:textColor="#000000"
        android:textSize="15sp"
        android:text="这里查看按钮的点击结果"/>


    <Button
        android:layout_gravity="center"
        android:layout_marginTop="100dp"
        android:id="@+id/btn_tiaozhuan"
        android:layout_width="200dp"
        android:layout_height="wrap_content"
        android:text="跳转界面"
        android:textColor="#000000"
        android:textSize="15sp"/>


</LinearLayout>

    }
}