android studio 创建第一个app之hello world

本是古典何须时尚 2021-12-13 17:43 323阅读 0赞

想要用studio创建一个简单的app,结果遇到各种问题，application就是允许不起来，后来在专业人的帮助下，删除了一些文件，然后运行起来了。

先看效果：

![956249-20190511181323436-2044536419.png][]

开发代码

![956249-20190511181359118-778227634.png][]

1 package com.demo.my.myapplication;
     2 
     3 import android.support.annotation.Nullable;
     4 import android.support.v7.app.AppCompatActivity;
     5 import android.os.Bundle;
     6 
     7 public class MainActivity extends AppCompatActivity {
     8 
     9     @Override
    10     protected void onCreate(@Nullable Bundle savedInstanceState) {
    11         super.onCreate(savedInstanceState);
    12         setContentView(R.layout.activity_main);
    13     }
    14 }

![956249-20190520103548549-413569599.png][]

![956249-20190520103607355-1544628878.png][]

![956249-20190520103623715-1601868326.png][]

改变颜色配置

<resources>
      <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">    <item name="colorPrimary">@color/colorPrimary</item> <item name="colorPrimaryDark">@color/colorPrimaryDark</item> <item name="colorAccent">@color/colorAccent</item> <item name="android:windowNoTitle">true</item> </style> <style name="Theme.Light.NoTitleBar" parent="@android:style/Theme.Light.NoTitleBar"> <item name="android:windowIsTranslucent">true</item> </style> </resources>

转载于:https://www.cnblogs.com/lisa2016/p/10849509.html

[956249-20190511181323436-2044536419.png]: /images/20211213/6faa966184564c76a78e82086d6a6eb9.png
[956249-20190511181359118-778227634.png]: /images/20211213/1cb5228a45f74765bdd41c279a6c1b19.png
[956249-20190520103548549-413569599.png]: /images/20211213/addf04f78a204dc182a66945fed7acf0.png
[956249-20190520103607355-1544628878.png]: /images/20211213/3a1c734af8dc47f98e86f16d84ae258d.png
[956249-20190520103623715-1601868326.png]: /images/20211213/7d6991188c1147eb9d195affddab344e.png