每日一篇学习笔记 直到我做完专题 :( [Day1]

之前自学完JAVA的一些基础语法从今天学android studio到B站上找自学的影片还蛮方便的 YT上的好像都要付钱(穷学生也可能是没找过拉

我们组的毕业专题是：旅游行程规划APP为此我跑去自学了一点点JAVA就来学Android Studio了

今日学习笔记TextView的基础设置

利用settext设置放在strings.xml的内容

package com.example.basiccontrols;

import android.os.Bundle;
import android.widget.TextView;

import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;

public class TextViewActivity extends AppCompatActivity {

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_text_view);
TextView tv_hello = findViewById(R.id.tv_hello);
tv_hello.setText(R.string.hello);
}
}

学习设置文字的大小和认识不一样的单位px=>像素dp=>有特定根据萤幕尺寸的公式来计算pxsp=>会跟随系统文字大小变化

package com.example.basiccontrols;

import android.os.Bundle;
import android.widget.TextView;

import androidx.activity.EdgeToEdge;
import androidx.appcompat.app.AppCompatActivity;

public class TextSizeActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
EdgeToEdge.enable(this);
setContentView(R.layout.activity_text_size);
TextView tv_hello = findViewById(R.id.tv_size_px);
tv_hello.setText(R.string.hello);
tv_hello.setTextSize(200);
}
}

学习设置文字和文字背景的颜色

package com.example.basiccontrols;

import android.graphics.Color;
import android.os.Bundle;
import android.widget.TextView;

import androidx.activity.EdgeToEdge;
import androidx.appcompat.app.AppCompatActivity;

public class activity_text_color extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
EdgeToEdge.enable(this);
setContentView(R.layout.activity_text_color);
TextView textView1 = findViewById(R.id.tv_code_system);
textView1.setTextColor(Color.GREEN);
TextView textView2 = findViewById(R.id.tv_color_eight);
textView2.setTextColor(0xff00ff00);
TextView textView3 = findViewById(R.id.tv_color_six);
textView3.setTextColor(0x00ff00);
TextView textView4 = findViewById(R.id.tv_color_background1);
textView4.setBackgroundColor(Color.GREEN);
TextView textView5 = findViewById(R.id.tv_color_background2);
textView5.setBackgroundResource(R.color.green);
}
}

今天先学到这边 :)