android自定义组件添加及界面刷新
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自定义界面按钮有无
1.界面布局：使用网格布局，事先定义按钮，并设置在布局中的位置（适合少量按钮组件自定义情况，手法非正规）（由后台获取添加按钮情况，依照该数据添加到GradView里）
<?xml version="1.0" encoding="utf-8"?><ScrollView xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="fill_parent" android:layout_height="fill_parent" android:scrollbars="vertical" android:fadingEdge="vertical" android:background="@drawable/gray"><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:id="@+id/root" > <LinearLayout android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent" android:weightSum="1" > <ImageView android:layout_width="match_parent" android:layout_height="wrap_content" android:src="@drawable/bs03" android:adjustViewBounds="true" android:maxWidth="500dip" android:maxHeight="500dip" /> <!--动态生成部分--> <!--将其改为网格布局--> <GridLayout android:paddingTop="25dip" android:paddingLeft="21dip" android:id="@+id/gridLayout1" android:layout_width="match_parent" android:layout_height="match_parent" android:rowCount="4" android:columnCount="2" > <ImageButton android:id="@+id/nsrfx" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/nsrfx2" android:layout_columnSpan="1"/> <ImageButton android:id="@+id/ssfx" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/ssfx2" android:layout_columnSpan="1"/> <ImageButton android:id="@+id/szrdfx" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/szrdfx2" android:layout_columnSpan="1" /> <ImageButton android:id="@+id/tj" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/tj2" android:layout_columnSpan="1"
/>
<!--之前使用的表格布局--><!-- <TableRow android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_gravity="center_horizontal" android:paddingTop="20dip"> <ImageButton android:id="@+id/jmskfx" android:layout_width="match_parent" android:layout_height="wrap_content" android:src="@drawable/jmskfx2" /> <ImageButton android:id="@+id/qsskfx" android:layout_width="match_parent" android:layout_height="wrap_content" android:src="@drawable/qsskfx2" /> </TableRow> <TableRow android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_gravity="center_horizontal" android:paddingTop="20dip"> <ImageButton android:id="@+id/nsrjbxx" android:layout_width="match_parent" android:layout_height="wrap_content" android:src="@drawable/nsrjbxx2" /> </TableRow> --> </GridLayout> <!--动态生成部分结束--> </LinearLayout></LinearLayout></ScrollView>
2.java后台请求添加情况：（绿色为请求服务器部分，粉色为得到返回数据后添加按钮、及所有按钮及其位置定义，棕色为刷新更改后的主界面）（之前采取的办法为添加activity传值给主activity，更改为向服务器求值，更简洁代码更少，以流量换复杂度**********访问失败情况需考虑bug）
package com.example.administrator.bs01;import android.app.AlertDialog;import android.content.Intent;import android.support.v7.app.ActionBarActivity;import android.os.Bundle;import android.view.Menu;import android.view.View;import android.view.ViewGroup;import android.widget.Button;import android.view.MenuItem;import android.widget.GridLayout;import android.widget.ImageButton;import android.widget.TableLayout;import android.widget.TableRow;import android.widget.Button;import com.example.administrator.bs01.domain.User;import com.example.administrator.bs01.util.DialogUtil;import com.example.administrator.bs01.util.HttpUtil;import org.json.JSONObject;import java.util.HashMap;import java.util.Map;public class MainActivity extends ActionBarActivity { ImageButton nsrfx,ssfx,szrdfx,tj,jmskfx,qsskfx,nsrjbxx,button1; GridLayout gridLayout1; int function; String username = null; int x1=2,x2=2,x3=3,y1=0,y2=1,y3=0; //设置网格布局中各个按钮的位置 GridLayout.Spec rowSpec1=GridLayout.spec(x1); GridLayout.Spec columnSpec1=GridLayout.spec(y1); GridLayout.LayoutParams BT1 = new GridLayout.LayoutParams(rowSpec1,columnSpec1);//即第三行第一列 // gridLayout1.addView(nsrjbxx,BT1); GridLayout.Spec rowSpec2=GridLayout.spec(x2); GridLayout.Spec columnSpec2=GridLayout.spec(y2); GridLayout.LayoutParams BT2 = new GridLayout.LayoutParams(rowSpec2,columnSpec2); GridLayout.Spec rowSpec3=GridLayout.spec(x3); GridLayout.Spec columnSpec3=GridLayout.spec(y3); GridLayout.LayoutParams BT3 = new GridLayout.LayoutParams(rowSpec3,columnSpec3); /** * 刷新, 这种刷新方法，只有一个Activity实例。 */ @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Intent intent = getIntent(); //获取由Intent传递的Bundle携带内容 User u=(User) intent.getSerializableExtra("user"); username = u.getUsername(); initView(); } /** * 初始化页面元素 */ private void initView(){ nsrfx=(ImageButton)findViewById(R.id.nsrfx); ssfx=(ImageButton)findViewById(R.id.ssfx); szrdfx=(ImageButton)findViewById(R.id.szrdfx); tj=(ImageButton)findViewById(R.id.tj); gridLayout1=(GridLayout)findViewById(R.id.gridLayout1); nsrjbxx=new ImageButton(this); qsskfx=new ImageButton(this); jmskfx=new ImageButton(this); function = query(username); addButton(function); //提示窗// String str="mmmmmm"+function;// new AlertDialog.Builder(MainActivity.this).setTitle("????").setMessage(str).show(); tj.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Bundle data = new Bundle(); data.putSerializable("username", username); //转到添加部分 Intent intent = new Intent(MainActivity.this, tjActivity.class); intent.putExtras(data); startActivity(intent);// startActivityForResult(intent, 0); } }); nsrfx.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //转到纳税人分析 Intent intent=new Intent(MainActivity.this,nsrfxActivity.class); startActivity(intent); } }); ssfx.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //转到税收分析 Intent intent = new Intent(MainActivity.this, ssfxActivity.class); startActivity(intent); } }); szrdfx.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //转到税种认定分析 Intent intent=new Intent(MainActivity.this,szrdfxActivity.class); startActivity(intent); } }); nsrjbxx.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //转到纳税人基本信息 Intent intent=new Intent(MainActivity.this,nsrjbxxActivity.class); startActivity(intent); } }); jmskfx.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //转到减免税款分析 Intent intent=new Intent(MainActivity.this,jmskfxActivity.class); startActivity(intent); } }); qsskfx.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //转到欠税税款分析 Intent intent=new Intent(MainActivity.this,qsskfxActivity.class); startActivity(intent); } }); } /** * 调用onCreate(), 目的是刷新数据, * 从另一activity界面返回到该activity界面时, 此方法自动调用 */ @Override protected void onResume() { super.onResume(); initView();//根据得到的添加情况刷新主界面} //请求服务器传回function情况 private int query(String username) { int function = 1000; try { //建立Map映射，存储传递信息 Map<String,String> map = new HashMap<String,String>(); map.put("username", username); // 设置访问的URL String url = HttpUtil.BASE_URL+ "getFunction.jsp"; // 封装为json格式 JSONObject jsonObject = new JSONObject(HttpUtil.postRequest(url, map)); //将传回的值赋给function function = jsonObject.getInt("function"); } catch (Exception e) { DialogUtil.showDialog(this , "连接服务器异常，请稍后再试", false); e.printStackTrace(); } return function; } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.menu_main, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); //noinspection SimplifiableIfStatement if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); } /** *重写onActivityResult()获取tjActivity回传值 */ @Override protected void onActivityResult(int requestCode, int resultCode, Intent intent) { // ??requestCode??resultCode?? if (requestCode == 0 && resultCode == 0) { Bundle bundleData = intent.getExtras();// function = function + bundleData.getInt("function"); function = bundleData.getInt("function"); addButton(function); } } public void addButton(int i){ int function1000 = i; //显示此时function情况// String str="mmmmmm"+function1000;// new AlertDialog.Builder(MainActivity.this).setTitle("????").setMessage(str).show(); //bug1.布局无法灵活变动 //bug2.重复添加会崩溃 if(function1000<0){ }else{ if(function1000==1100){ nsrjbxx.setImageResource(R.drawable.nsrjbxx2);// TableRow1.addView(nsrjbxx, BT1);// TableLayout1.addView(TableRow1, TR1); gridLayout1.addView(nsrjbxx,BT1); }else if(function1000==1010) { jmskfx.setImageResource(R.drawable.jmskfx2);// TableRow2.addView(jmskfx, BT2);// TableLayout1.addView(TableRow2, TR2); gridLayout1.addView(jmskfx,BT1); }else if(function1000==1001){ qsskfx.setImageResource(R.drawable.qsskfx2);// TableRow3.addView(qsskfx, BT3);// TableLayout1.addView(TableRow3, TR3); gridLayout1.addView(qsskfx,BT1); }else if(function1000==1110) {// y2++; nsrjbxx.setImageResource(R.drawable.nsrjbxx2);// TableRow1.addView(nsrjbxx, BT1);// TableLayout1.addView(TableRow1, TR1); gridLayout1.addView(nsrjbxx,BT1); jmskfx.setImageResource(R.drawable.jmskfx2);// TableRow2.addView(jmskfx, BT2);// TableLayout1.addView(TableRow2, TR2); gridLayout1.addView(jmskfx,BT2); }else if(function1000==1101) {// y3++;; nsrjbxx.setImageResource(R.drawable.nsrjbxx2);// TableRow1.addView(nsrjbxx, BT1);// TableLayout1.addView(TableRow1, TR1); gridLayout1.addView(nsrjbxx,BT1); qsskfx.setImageResource(R.drawable.qsskfx2);// TableRow3.addView(qsskfx, BT3);// TableLayout1.addView(TableRow3, TR3); gridLayout1.addView(qsskfx,BT2); }else if(function1000==1011) {// y3++; jmskfx.setImageResource(R.drawable.jmskfx2);// TableRow2.addView(jmskfx, BT2);// TableLayout1.addView(TableRow2, TR2); gridLayout1.addView(jmskfx,BT1); qsskfx.setImageResource(R.drawable.qsskfx2);// TableRow3.addView(qsskfx, BT3);// TableLayout1.addView(TableRow3, TR3); gridLayout1.addView(qsskfx,BT2); }else if(function1000==1111) {// y2++;x3++; nsrjbxx.setImageResource(R.drawable.nsrjbxx2);// TableRow1.addView(nsrjbxx, BT1);// TableLayout1.addView(TableRow1, TR1); gridLayout1.addView(nsrjbxx,BT1); jmskfx.setImageResource(R.drawable.jmskfx2);// TableRow2.addView(jmskfx, BT2);// TableLayout1.addView(TableRow2, TR2); gridLayout1.addView(jmskfx,BT2); qsskfx.setImageResource(R.drawable.qsskfx2);// TableRow3.addView(qsskfx, BT3);// TableLayout1.addView(TableRow3, TR3); gridLayout1.addView(qsskfx,BT3); } } }}（3.关于刷新亦有其他方法比如：如上所提http://blog.csdn.net/cryhelyxx/article/details/24502025
下拉刷新（可能此处不太合适）http://www.open-open.com/lib/view/open1430797271054.html）
4.添加部分的java后台：
package com.example.administrator.bs01;import android.app.AlertDialog;import android.content.Intent;import android.support.v7.app.ActionBarActivity;import android.os.Bundle;import android.view.View;import android.widget.TextView;import android.widget.Button;import android.widget.CheckBox;import android.widget.LinearLayout;import android.view.Menu;import android.view.MenuItem;import com.example.administrator.bs01.util.DialogUtil;import com.example.administrator.bs01.util.HttpUtil;import org.json.JSONObject;import org.w3c.dom.Text;import java.lang.ref.SoftReference;import java.util.HashMap;import java.util.Map;public class tjActivity extends ActionBarActivity { Button buttontj; CheckBox checkbox1,checkbox2,checkbox3; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_tj); buttontj = (Button) findViewById(R.id.buttontj); checkbox1 = (CheckBox) findViewById(R.id.cb1); checkbox2 = (CheckBox) findViewById(R.id.cb2); checkbox3 = (CheckBox) findViewById(R.id.cb3);// final Button buttontest = new Button(this); buttontj.setOnClickListener( new View.OnClickListener() { @Override public void onClick(View v) {// Intent intent=new Intent(tjActivity.this,MainActivity.class);// startActivity(intent);// Button.setVisibility(View.INVISIBLE) ;//原先采用的隐藏策略 String str = ""; String str0 = "某组件已在界面内"; int had = -10000; int function = 1000;// if (checkbox1.isChecked()) { str += "纳税人基本信息"; function += 100; } if (checkbox2.isChecked()) { str += "减免税款分析"; function += 10; } if (checkbox3.isChecked()) { str += "欠税税款分析"; function += 1; } //获得用户名 Intent intent = getIntent(); String username = (String) intent.getSerializableExtra("username"); //返回的功能添加情况重复则不添加，不重复则添加 boolean result = queryAdd(username, function); Bundle data = new Bundle(); if(function == 1000){ function = had; } else if (result) { new AlertDialog.Builder(tjActivity.this).setTitle("添加").setMessage(str0).show(); function = had; } else { new AlertDialog.Builder(tjActivity.this).setTitle("添加").setMessage(str).show();// .setPositiveButton("ȷ��",null) } data.putInt("function", function); intent.putExtras(data); tjActivity.this.setResult(0, intent); new Thread() { @Override public void run() { super.run(); try { Thread.sleep(1000);//线程睡1秒 } catch (InterruptedException e) { e.printStackTrace(); } /** * Ҫִ�еIJ��� */ tjActivity.this.finish(); } }.start(); } } ); } private boolean queryAdd(String username,int function) { boolean result = true; try { //添加Map映射 Map<String,String> map = new HashMap<String,String>(); map.put("username", username); map.put("function", function+""); // 设置URL String url = HttpUtil.BASE_URL+ "addFunction.jsp"; // 封装为json对象 JSONObject jsonObject = new JSONObject(HttpUtil.postRequest(url, map)); //获取传回的result result=jsonObject.getBoolean("result"); //提示窗口// String str="kkkkkkkk"+function;// new AlertDialog.Builder(Login.this).setTitle("test").setMessage(str).show(); } catch (Exception e) { DialogUtil.showDialog(this , "连接服务器异常，请稍后再试", false); e.printStackTrace(); } return result; } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.menu_tj, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); //noinspection SimplifiableIfStatement if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); }}
5.添加界面布局：<?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" android:layout_marginTop="10dip"> <RelativeLayout android:layout_width="match_parent" android:layout_height="61dip" android:clickable="true" android:background="@drawable/home_select_list_style"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginLeft="5dip" android:layout_centerVertical="true" android:orientation="horizontal"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/tv01" android:textSize="18dip" android:textColor="@android:color/secondary_text_light" android:textStyle="bold"/> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="right"> <CheckBox android:id="@+id/cb1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="right" android:layout_alignParentRight="true"/> </LinearLayout> </LinearLayout> </RelativeLayout> <RelativeLayout android:layout_width="match_parent" android:layout_height="61dip" android:clickable="true" android:background="@drawable/home_select_list_style"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginLeft="5dip" android:layout_centerVertical="true" android:orientation="horizontal"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/tv02" android:textSize="18dip" android:textColor="@android:color/secondary_text_light" android:textStyle="bold"/> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="right"> <CheckBox android:id="@+id/cb2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="right" android:layout_alignParentRight="true"/> </LinearLayout> </LinearLayout> </RelativeLayout> <RelativeLayout android:layout_width="match_parent" android:layout_height="61dip" android:clickable="true" android:background="@drawable/home_select_list_style"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginLeft="5dip" android:layout_centerVertical="true" android:orientation="horizontal"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/tv03" android:textSize="18dip" android:textColor="@android:color/secondary_text_light" android:textStyle="bold"/> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="right"> <CheckBox android:id="@+id/cb3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="right" android:layout_alignParentRight="true"/> </LinearLayout> </LinearLayout> </RelativeLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center_horizontal" android:paddingTop="240dip"> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/btntj" android:id="@+id/buttontj" /> </LinearLayout></LinearLayout>添加界面效果图：
（新手上路》》》》》》》》》》》》》》）
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