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安卓页面布局代码（安卓页面布局）

新闻来源：互联网资料整理发布时间：2023/4/6 8:01:20 共计：4615 浏览

在android开发中，怎样动态生成多界面？

效果：layout界面布局： view plaincopyprint?<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:ad="http://schemas.android.com/apk/res/android"ad:layout_width="match_parent"ad:layout_height="match_parent"ad:orientation="vertical" ><LinearLayoutad:layout_width="match_parent"ad:layout_height="30dp"ad:background="@drawable/titlebar_bg"ad:orientation="horizontal" ><ImageViewad:layout_width="wrap_content"ad:layout_height="wrap_content"ad:src="@drawable/back_44_44" /><LinearLayoutad:layout_width="match_parent"ad:layout_height="30dp"ad:gravity="center" ><TextViewad:layout_width="wrap_content"ad:layout_height="wrap_content"ad:text="课程列表"ad:textSize="20sp" /></LinearLayout></LinearLayout><ScrollViewad:id="@+id/ScrollView"ad:layout_width="fill_parent"ad:layout_height="wrap_content"ad:scrollbars="vertical" ><LinearLayoutad:id="@+id/mainLayout"ad:layout_width="match_parent"ad:layout_height="wrap_content"ad:orientation="vertical" ></LinearLayout></ScrollView></LinearLayout>httputil辅助类：
view plaincopyprint?package com.tudou.activity.work4;import java.io.BufferedReader;import java.io.DataOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.net.HttpURLConnection;import java.net.URL;import android.util.Log;public class HttpUtil {/*** 获取到流，自己处理数据* @param path* @return*/public static InputStream getInputStream(String path) {HttpURLConnection conn = null;try {URL url = new URL(path);conn = (HttpURLConnection) url.openConnection();conn.setDoInput(true);// 设置是否向httpUrlConnection输出，post请求，参数要放在http正文内conn.setDoOutput(true);conn.setReadTimeout(3000);conn.setConnectTimeout(3000);conn.setUseCaches(false);conn.setRequestMethod("POST");if (conn.getResponseCode() == 200) {Log.d("mylog", "getResponseCode:" + 200);return conn.getInputStream();}} catch (IOException e) {e.printStackTrace();} finally {if (conn != null) {conn.disconnect();}}return null;}/*** 直接返回响应体正文* @param path* @return*/public static String getResponseBody(String path,String params) {HttpURLConnection conn = null;StringBuffer result=new StringBuffer()
;try {URL url = new URL(path);conn = (HttpURLConnection) url.openConnection();conn.setDoInput(true);// 设置是否向httpUrlConnection输出，post请求，参数要放在http正文内conn.setDoOutput(true);conn.setReadTimeout(3000);conn.setConnectTimeout(3000);conn.setUseCaches(false);conn.setRequestMethod("POST");//数据输出流，该语句隐含的执行connect动作if(params!=null){DataOutputStream out = new DataOutputStream( conn.getOutputStream());//将参数写入流，刷新提交关闭流out.writeBytes(params);out.flush();out.close();}//读取连接返回的数据BufferedReader reader = new BufferedReader(new InputStreamReader( conn.getInputStream()));String inputLine = null;while (((inputLine = reader.readLine()) != null)) {result.append(inputLine);//"n";}//关闭reader.close();if (conn.getResponseCode() == 200) {Log.d("mylog", "getResponseCode:" + 200);}} catch (IOException e) {e.printStackTrace();} finally {if (conn != null) {conn.disconnect();}}return result.toString();}}主activity: view plaincopyprint?package com.tudou.activity.work4;import org.json.JSONArray;import org.json.JSONException;import org.json.JSONObject;import com.tudou.activity.R;import android.app.Activity;import android.graphics.Color;import android.os.Bundle;import android.util.Log;import android.util.TypedValue;import android.view.Gravity;import android.view.ViewGroup;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.LinearLayout.LayoutParams;import android.widget.ProgressBar;import android.widget.TextView;public class HomeWork4 extends Activity {String path = "此处省略，你要请求的地址";@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.homework4);LinearLayout mainLayout = (LinearLayout)findViewById(R.id.mainLayout);String result=HttpUtil.getResponseBody(path,null);// Log.d("mylog", "result:" + result);try{JSONObject obj = new JSONObject(result);JSONArray array=obj.getJSONArray("onlineCourses");for (int i = 0; i < array.length(); i++) {JSONObject course= array.getJSONObject(i);// Log.d("mylog", "course:" + course.toString());//添加左边的layoutLinearLayout leftlayout=new LinearLayout(this);//注意包android.widget.LinearLayout.LayoutParams，其它包下面的LayoutParams不起作用LayoutParams params=new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);params.topMargin=10;leftlayout.setLayoutParams(params);leftlayout.setOrientation(LinearLayout.HORIZONTAL);leftlayout.setGravity(Gravity.CENTER_VERTICAL);//添加左边layout的图片ImageView imageView=new ImageView(this);params=new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);imageView.setLayoutParams(params);imageView.setImageResource(R.drawable.image_default_195_130);leftlayout.addView(imageView);//添加右边的layout，分为上下2部分，上面是标题，下面是进度条LinearLayout rightlayout=new LinearLayout(this);LayoutParams rightLayoutParams=new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);rightlayout.setLayoutParams(rightLayoutParams);rightlayout.setOrientation(LinearLayout.VERTICAL);//添加课程标题TextView textView=new TextView(this);params=new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);textView.setLayoutParams(params);textView.setText(course.get("courseName").toString());textView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 15);//18SP//学分，水平布局,分为左右，左：学分，，右：分值LinearLayout studyLayout=new LinearLayout(this);params=new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);studyLayout.setLayoutParams(params);studyLayout.setOrientation(LinearLayout.HORIZONTAL);//添加学分TextView studyView=new TextView(this);params=new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);studyView.setLayoutParams(params);studyView.setText("学分:");studyView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 12);studyView.setTextColor(Color.parseColor("#b6b6b6"));//第2种方法：setTextColor(Color.rgb(255, 255, 255));//添加学分值TextView studyValueView=new TextView(this);params=new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);studyValueView.setLayoutParams(params);studyValueView.setText(course.get("courseCredit").toString());studyValueView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 14);//进度条，水平布局,分为左中右，左：学习进度，中：进度条，右：%值LinearLayout processLayout=new LinearLayout(this);params=new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);processLayout.setLayoutParams(params);processLayout.setOrientation(LinearLayout.HORIZONTAL);//添加学习进度TextView processtextView=new TextView(this);params=new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);processtextView.setLayoutParams(params);processtextView.setText("学习进度:");processtextView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 12);processtextView.setTextColor(Color.parseColor("#b6b6b6"));//添加进度条ProgressBar bar=new ProgressBar(this,null,android.R.attr.progressBarStyleHorizontal);//指定进度条样式params=new LayoutParams(150, ViewGroup.LayoutParams.WRAP_CONTENT);bar.setLayoutParams(params);bar.setMax(100);bar.setProgress(10);//添加%值TextView processvaluetextView=new TextView(this);params=new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);processvaluetextView.setLayoutParams(params);processvaluetextView.setText("10%");processvaluetextView.setTextSize(TypedValue.COMPLEX_UNIT_SP, 12);processvaluetextView.setTextColor(Color.parseColor("#b6b6b6"));//添加标题rightlayout.addView(textView);//添加学分studyLayout.addView(studyView);studyLayout.addView(studyValueView);rightlayout.addView(studyLayout);//添加进度条processLayout.addView(processtextView);processLayout.addView(bar);processLayout.addView(processvaluetextView);rightlayout.addView(processLayout);//添加左右边leftlayout.addView(rightlayout);mainLayout.addView(leftlayout);}}catch(JSONException e){e.printStackTrace();　

安卓桌面布局设置？

只需在应用程序界面选择要创建快捷方式的程序，点击长按，然后图标就会发生变化。此时界面也会变成主界面，只需找到合适的位置松手，快捷方式就创建完成了。向下拖动到顶部，即可放置到桌面上。　　安卓手机与iOS系统不同，分为桌面和主菜单两个部分，桌面可以放置快捷图标和桌面插件，而主菜单则是所有应用的图标。将平常常用的图标放到桌面上，这样一来就可以更加快捷地操作手机了。

Android界面布局中的绝对布局特点？

1，FrameLayout，特点：所有的View都会放在左上角，并且后添加进去的View会覆盖之前放进去的View。 2，LinearLayout，特点：在水平或者垂直方向上依次按照顺序来排列子元素，控件的排列顺序遵循其在布局文件中被写出的先后顺序。 3，RelativeLayout，特点：以某一个子元素为参照物，其余子元素均按照其相对位置来完成布局。 4，TableLayout，特点：每个TableLayout都是由一个或多个TableRow组成的，一个TableRow就代表TableLayout的一行。 5，AbsoluteLayout，表格布局类似Html里面的Table。每一个TableLayout里面有表格行TableRow，TableRow里面可以具体定义每一个元素，设定他的对齐方式 android:gravity="" 。