简介：代码 <div class="card content"> <canvas id="canvas" style="width:100%;" width="820" height="250"></canvas> <script> (function(){var t=820;var a=250;var r=7;var n=10;var e=.65;var f;var o=[];const v=["#33B5E5","#0099CC","#AA66CC","#9933CC","#99CC00","#669900","#FFBB33","#FF8800","#FF4444","#CC0000"];var h=[];var u=[[[0,0,1,1,1,0,0],[0,1,1,0,1,1,0],[1,1,0,0,0,1,1],[1,1,0,0,0,1,1],[1,1,0,0,0,1,1],[1,1,0,0,0,1,1],[1,1,0,0,0,1,1],[1,1,0,0,0,1,1],[0,1,1,0,1,1,0],[0,0,1,1,1,0,0]],[[0,0,0,1,1,0,0],[0,1,1,1,1,0,0],[0,0,0,1,1,0,0],[0,0,0,1,1,0,0],[0,0,0,1,1,0,0],[0,0,0,1,1,0,0],[0,0,0,1,1,0,0],[0,0,0,1,1,0,0],[0,0,0,1,1,0,0],[1,1,1,1,1,1,1]],[[0,1,1,1,1,1,0],[1,1,0,0,0,1,1],[0,0,0,0,0,1,1],[0,0,0,0,1,1,0],[0,0,0,1,1,0,0],[0,0,1,1,0,0,0],[0,1,1,0,0,0,0],[1,1,0,0,0,0,0],[1,1,0,0,0,1,1],[1,1,1,1,1,1,1]],[[1,1,1,1,1,1,1],[0,0,0,0,0,1,1],[0,0,0,0,1,1,0],[0,0,0,1,1,0,0],[0,0,1,1,1,0,0],[0,0,0,0,1,1,0],[0,0,0,0,0,1,1],[0,0,0,0,0,1,1],[1,1,0,0,0,1,1],[0,1,1,1,1,1,0]],[[0,0,0,0,1,1,0],[0,0,0,1,1,1,0],[0,0,1,1,1,1,0],[0,1,1,0,1,1,0],[1,1,0,0,1,1,0],[1,1,1,1,1,1,1],[0,0,0,0,1,1,0],[0,0,0,0,1,1,0],[0,0,0,0,1,1,0],[0,0,0,1,1,1,1]],[[1,1,1,1,1,1,1],[1,1,0,0,0,0,0],[1,1,0,0,0,0,0],[1,1,1,1,1,1,0],[0,0,0,0,0,1,1],[0,0,0,0,0,1,1],[0,0,0,0,0,1,1],[0,0,0,0,0,1,1],[1,1,0,0,0,1,1],[0,1,1,1,1,1,0]],[[0,0,0,0,1,1,0],[0,0,1,1,0,0,0],[0,1,1,0,0,0,0],[1,1,0,0,0,0,0],[1,1,0,1,1,1,0],[1,1,0,0,0,1,1],[1,1,0,0,0,1,1],[1,1,0,0,0,1,1],[1,1,0,0,0,1,1],[0,1,1,1,1,1,0]],[[1,1,1,1,1,1,1],[1,1,0,0,0,1,1],[0,0,0,0,1,1,0],[0,0,0,0,1,1,0],[0,0,0,1,1,0,0],[0,0,0,1,1,0,0],[0,0,1,1,0,0,0],[0,0,1,1,0,0,0],[0,0,1,1,0,0,0],[0,0,1,1,0,0,0]],[[0,1,1,1,1,1,0],[1,1,0,0,0,1,1],[1,1,0,0,0,1,1],[1,1,0,0,0,1,1],[0,1,1,1,1,1,0],[1,1,0,0,0,1,1],[1,1,0,0,0,1,1],[1,1,0,0,0,1,1],[1,1,0,0,0,1,1],[0,1,1,1,1,1,0]],[[0,1,1,1,1,1,0],[1,1,0,0,0,1,1],[1,1,0,0,0,1,1],[1,1,0,0,0,1,1],[0,1,1,1,0,1,1],[0,0,0,0,0,1,1],[0,0,0,0,0,1,1],[0,0,0,0,1,1,0],[0,0,0,1,1,0,0],[0,1,1,0,0,0,0]],[[0,0,0,0],[0,0,0,0],[0,1,1,0],[0,1,1,0],[0,0,0,0],[0,0,0,0],[0,1,1,0],[0,1,1,0],[0,0,0,0],[0,0,0,0]]];function l(t){var a=[];f.fillStyle="#005EAC";var r=new Date;var e=70,o=30;var v=r.getHours();var u=Math.floor(v/10);var l=v%10;a.push({num:u});a.push({num:l});a.push({num:10});var c=r.getMinutes();var u=Math.floor(c/10);var l=c%10;a.push({num:u});a.push({num:l});a.push({num:10});var M=r.getSeconds();var u=Math.floor(M/10);var l=M%10;a.push({num:u});a.push({num:l});for(var p=0;p<a.length;p++){a[p].offsetX=e;e=m(e,o,a[p].num,t);if(p<a.length 1){if(a[p].num!=10&&a[p+1].num!=10){e+=n}}}if(h.length==0){h=a}else{for(var C=0;C<h.length;C++){if(h[C].num!=a[C].num){s(a[C]);h[C].num=a[C].num}}}i(t);g();return r}function s(t){var a=t.num;var n=u[a];for(var e=0;e<n.length;e++){for(var f=0;f<n[e].length;f++){if(n[e][f]==1){var h={offsetX:t.offsetX+r+r*2*f,offsetY:30+r+r*2*e,color:v[Math.floor(Math.random()*v.length)],g:1.5+Math.random(),vx:Math.pow( 1,Math.ceil(Math.random()*10))*4+Math.random(),vy: 5};o.push(h)}}}}function i(t){for(var a=0;a<o.length;a++){t.beginPath();t.fillStyle=o[a].color;t.arc(o[a].offsetX,o[a].offsetY,r,0,2*Math.PI);t.fill()}}function g(){var n=0;for(var f=0;f<o.length;f++){var v=o[f];v.offsetX+=v.vx;v.offsetY+=v.vy;v.vy+=v.g;if(v.offsetY>a r){v.offsetY=a r;v.vy= v.vy*e}if(v.offsetX>r&&v.offsetX<t r){o[n]=o[f];n++}}for(;n<o.length;n++){o.pop()}}function m(t,a,n,e){var f=u[n];for(var o=0;o<f.length;o++){for(var v=0;v<f[o].length;v++){if(f[o][v]==1){e.beginPath();e.arc(t+r+r*2*v,a+r+r*2*o,r,0,2*Math.PI);e.fill()}}}e.beginPath();t+=f[0].length*r*2;return t}var c=document.getElementById("canvas");c.width=t;c.height=a;f=c.getContext("2d");var M=new Date;setInterval(function(){f.clearRect(0,0,f.canvas.width,f.canvas.height);l(f)},50)})(); </script> </div>

简介：前言因为经常捣鼓网站，有时候会直接在服务器上热更新，这样会导致用户体验很不好这时我们可以设置一个维护通知页面，告知访问的用户正在维护，防止用户因无法访问放弃访问本站效果教程本教程基于Joe主题，当然其他Typecho主题也可以使用，代码是固定的，但是方法是灵活的，期待您的灵感大爆发🥰添加后台开关这里我们可以在主题目录下的 functions.php里添加以下代码 - 隐藏 - 添加全局跳转在public/header.php顶部添加以下代码如果你只想某些页面跳转，比如只想跳转首页，你可以在index.php添加下面的代码 - 隐藏 - 维护页面下载下面的文件，上传到Typecho主程序的根目录，记得把文件名改为 Maintain.html注意：不是 主题 根目录 - 隐藏 -

简介：示例代码day1「layout部分」<?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"> <EditText android:id="@+id/et1" android:layout_width="200dp" android:layout_height="50dp" android:hint="请输入数字" android:textSize="20sp"/> <Spinner android:id="@+id/spinnner" android:entries="@array/lxy" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <EditText android:id="@+id/et2" android:layout_width="200dp" android:layout_height="50dp" android:hint="请输入数字" android:textSize="20sp"/> <Button android:id="@+id/btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="计算" android:textSize="20sp"/> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="计算结果如下👇" android:textSize="30dp"/> <TextView android:id="@+id/txt" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="" android:textSize="25sp"/> </LinearLayout>array「values部分」<?xml version="1.0" encoding="utf 8"?> <resources> <string array name="lxy"> <item>+</item> <item> </item> <item>*</item> <item>/</item> <item>%</item> </string array> </resources>MainActivity变量private EditText et1,et2; private TextView txt;主代码Spinner spinner = (Spinner) findViewById(R.id.spinnner); spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { String result = parent.getItemAtPosition(position).toString(); Toast.makeText(MainActivity.this,result,Toast.LENGTH_SHORT).show(); } @Override public void onNothingSelected(AdapterView<?> parent) { } }); Spinner operatorSpinner = findViewById(R.id.spinnner); ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.lxy, android.R.layout.simple_spinner_item); adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); operatorSpinner.setAdapter(adapter); Button calculateButton = findViewById(R.id.btn); calculateButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { et1 = findViewById(R.id.et1); et2 = findViewById(R.id.et2); txt = findViewById(R.id.txt); double num1 = Double.parseDouble(et1.getText().toString()); double num2 = Double.parseDouble(et2.getText().toString()); Spinner operatorSpinner = findViewById(R.id.spinnner); String operator = operatorSpinner.getSelectedItem().toString(); double result = 0; switch (operator) { case "+": result = num1 + num2; break; case " ": result = num1 num2; break; case "*": result = num1 * num2; break; case "/": result = num1 / num2; break; case "%": result = num1 % num2; break; } txt.setText(String.valueOf(result)); } });

简介：简易布局文件activity_main<?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"> <Button android:id="@+id/secbtn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="跳转到第二个Activity" /> </LinearLayout>layout1<?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"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="这是layout1" android:textSize="30dp"/> </LinearLayout>java类MainActivitypackage com.example.demo1; import androidx.appcompat.app.AppCompatActivity; import android.annotation.SuppressLint; import android.os.Bundle; import android.view.View; import android.widget.Button; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.layout1); } }IntentActivityimport android.annotation.SuppressLint; import android.content.ComponentName; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.widget.Button; public class IntentActivity extends MainActivity { private Button secbtn; @SuppressLint("MissingInflatedId") @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); secbtn = (Button) findViewById(R.id.secbtn); secbtn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { //实现activity跳转 显示意图跳转 /* Intent intent=new Intent(); ComponentName component=new ComponentName(IntentActivity.this,MainActivity.class); intent.setComponent(component); startActivity(intent); */ //隐式意图跳转 Intent intent = new Intent(); //通过Action属性进行查找对应activity intent.setAction("android.intent.newland.MY_ACTION"); startActivity(intent); } }); }AndroidManifest<?xml version="1.0" encoding="utf 8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools"> <application android:allowBackup="true" android:dataExtractionRules="@xml/data_extraction_rules" android:fullBackupContent="@xml/backup_rules" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:supportsRtl="true" android:theme="@style/Theme.Demo1" tools:targetApi="31"> <activity android:name=".IntentActivity" android:exported="true"> <intent filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent filter> </activity> <activity android:name=".MainActivity" android:exported="true"> <intent filter> <action android:name="android.intent.newland.MY_ACTION" /> <category android:name="android.intent.category.DEFAULT" /> </intent filter> </activity> </application> </manifest>

简介：示例具体代码girl「drawable部分」<?xml version="1.0" encoding="utf 8"?> <animation list xmlns:android="http://schemas.android.com/apk/res/android" android:oneshot="false"> <item android:drawable="@drawable/girl_1" android:duration="100"></item> <item android:drawable="@drawable/girl_2" android:duration="100"></item> <item android:drawable="@drawable/girl_3" android:duration="100"></item> <item android:drawable="@drawable/girl_4" android:duration="100"></item> </animation list>girldonghua「layout部分」<?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"> <ImageView android:id="@+id/iv" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/girl" android:layout_marginLeft="100dp" android:layout_marginTop="20dp"/> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" android:layout_marginTop="25dp"> <Button android:id="@+id/start" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="开始" android:layout_marginLeft="50dp"/> <Button android:id="@+id/stop" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="停止" android:layout_marginLeft="45dp"/> </LinearLayout> </LinearLayout>Main super.onCreate(savedInstanceState); setContentView(R.layout.girldonghua); iv=(ImageView) findViewById(R.id.iv); start =(Button) findViewById(R.id.start); stop =(Button) findViewById(R.id.stop); //得到AnimationDrawable对象 ad =(AnimationDrawable) iv.getBackground(); start.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (v == start) { ad.start(); }else { ad.stop(); } } }); stop.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View t) { if (t == stop){ ad.stop(); }else { ad.start(); } } }); }