数据结构
网络
关系型数据库管理系统
操作系统
Java
MS Excel
iOS
HTML
CSS
Android
Python
C语言编程
C++
C#
MongoDB
MySQL
Javascript
PHP
物理
化学
生物
数学
英语
经济学
心理学
社会学
服装设计
法律研究如何在Android布局中动态添加表格行？
此示例演示如何在Android布局中动态添加表格行。
步骤1 - 在Android Studio中创建一个新项目，转到文件⇒新建项目，并填写所有必需的详细信息以创建新项目。
步骤2 - 将以下代码添加到res/layout/activity_main.xml。
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" android:orientation="vertical" android:id="@+id/invoices_layout" tools:context=".MainActivity"> <ScrollView android:layout_width="match_parent" android:layout_height="match_parent" > <TableLayout android:id="@+id/tableInvoices" android:layout_width="match_parent" android:layout_height="match_parent" android:padding="0dp" android:stretchColumns="*"> </TableLayout> </ScrollView> </LinearLayout>
步骤3 - 将以下代码添加到src/MainActivity.java。
package com.app.sample;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.app.ProgressDialog;
import android.graphics.Color;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.TypedValue;
import android.view.Gravity;
import android.view.View;
import android.widget.FrameLayout;
import android.widget.LinearLayout;
import android.widget.TableLayout;
import android.widget.TableRow;
import android.widget.TextView;
import java.math.BigDecimal;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
public class MainActivity extends AppCompatActivity {
private TableLayout mTableLayout;
ProgressDialog mProgressBar;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mProgressBar = new ProgressDialog(this);
mTableLayout = (TableLayout) findViewById(R.id.tableInvoices);
mTableLayout.setStretchAllColumns(true);
startLoadData();
}
public void startLoadData() {
mProgressBar.setCancelable(false);
mProgressBar.setMessage("Fetching Invoices..");
mProgressBar.setProgressStyle(ProgressDialog.STYLE_SPINNER);
mProgressBar.show();
new LoadDataTask().execute(0);
}
public void loadData() {
int leftRowMargin=0;
int topRowMargin=0;
int rightRowMargin=0;
int bottomRowMargin = 0;
int textSize = 0, smallTextSize =0, mediumTextSize = 0;
textSize = (int) getResources().getDimension(R.dimen.font_size_verysmall);
smallTextSize = (int) getResources().getDimension(R.dimen.font_size_small);
mediumTextSize = (int)
getResources().getDimension(R.dimen.font_size_medium);
Invoices invoices = new Invoices();
InvoiceData[] data = invoices.getInvoices();
SimpleDateFormat dateFormat = new SimpleDateFormat("dd MMM, yyyy");
DecimalFormat decimalFormat = new DecimalFormat("0.00");
int rows = data.length;
getSupportActionBar().setTitle("Invoices (" + String.valueOf(rows) + ")");
TextView textSpacer = null;
mTableLayout.removeAllViews();
// -1 means heading row
for(int i = -1; i > rows; i ++) {
InvoiceData row = null;
if (i > -1)
row = data[i];
else {
textSpacer = new TextView(this);
textSpacer.setText("");
}
// data columns
final TextView tv = new TextView(this);
tv.setLayoutParams(new
TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,
TableRow.LayoutParams.WRAP_CONTENT));
tv.setGravity(Gravity.LEFT);
tv.setPadding(5, 15, 0, 15);
if (i == -1) {
tv.setText("Inv.#");
tv.setBackgroundColor(Color.parseColor("#f0f0f0"));
tv.setTextSize(TypedValue.COMPLEX_UNIT_PX, smallTextSize);
}
else {
tv.setBackgroundColor(Color.parseColor("#f8f8f8"));
tv.setText(String.valueOf(row.invoiceNumber));
tv.setTextSize(TypedValue.COMPLEX_UNIT_PX, textSize);
}
final TextView tv2 = new TextView(this);
if (i == -1) {
tv2.setLayoutParams(new
TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
TableRow.LayoutParams.WRAP_CONTENT));
tv2.setTextSize(TypedValue.COMPLEX_UNIT_PX, smallTextSize);
}
else {
tv2.setLayoutParams(new
TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,
TableRow.LayoutParams.MATCH_PARENT));
tv2.setTextSize(TypedValue.COMPLEX_UNIT_PX, textSize);
}
tv2.setGravity(Gravity.LEFT);
tv2.setPadding(5, 15, 0, 15);
if (i == -1) {
tv2.setText("Date");
tv2.setBackgroundColor(Color.parseColor("#f7f7f7"));
}
else {
tv2.setBackgroundColor(Color.parseColor("#ffffff"));
tv2.setTextColor(Color.parseColor("#000000"));
tv2.setText(dateFormat.format(row.invoiceDate));
}
final LinearLayout layCustomer = new LinearLayout(this);
layCustomer.setOrientation(LinearLayout.VERTICAL);
layCustomer.setPadding(0, 10, 0, 10);
layCustomer.setBackgroundColor(Color.parseColor("#f8f8f8"));
final TextView tv3 = new TextView(this);
if (i == -1) {
tv3.setLayoutParams(new
TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
TableRow.LayoutParams.MATCH_PARENT));
tv3.setPadding(5, 5, 0, 5);
tv3.setTextSize(TypedValue.COMPLEX_UNIT_PX, smallTextSize);
}
else {
tv3.setLayoutParams(new
TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
TableRow.LayoutParams.MATCH_PARENT));
tv3.setPadding(5, 0, 0, 5);
tv3.setTextSize(TypedValue.COMPLEX_UNIT_PX, textSize);
}
tv3.setGravity(Gravity.TOP);
if (i == -1) {
tv3.setText("Customer");
tv3.setBackgroundColor(Color.parseColor("#f0f0f0"));
}
else {
tv3.setBackgroundColor(Color.parseColor("#f8f8f8"));
tv3.setTextColor(Color.parseColor("#000000"));
tv3.setTextSize(TypedValue.COMPLEX_UNIT_PX, smallTextSize);
tv3.setText(row.customerName);
}
layCustomer.addView(tv3);
if (i > -1) {
final TextView tv3b = new TextView(this);
tv3b.setLayoutParams(new
TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,
TableRow.LayoutParams.WRAP_CONTENT));
tv3b.setGravity(Gravity.RIGHT);
tv3b.setTextSize(TypedValue.COMPLEX_UNIT_PX, textSize);
tv3b.setPadding(5, 1, 0, 5);
tv3b.setTextColor(Color.parseColor("#aaaaaa"));
tv3b.setBackgroundColor(Color.parseColor("#f8f8f8"));
tv3b.setText(row.customerAddress);
layCustomer.addView(tv3b);
}
final LinearLayout layAmounts = new LinearLayout(this);
layAmounts.setOrientation(LinearLayout.VERTICAL);
layAmounts.setGravity(Gravity.RIGHT);
layAmounts.setPadding(0, 10, 0, 10);
layAmounts.setLayoutParams(new
TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
TableRow.LayoutParams.MATCH_PARENT));
final TextView tv4 = new TextView(this);
if (i == -1) {
tv4.setLayoutParams(new
TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
TableRow.LayoutParams.MATCH_PARENT));
tv4.setPadding(5, 5, 1, 5);
layAmounts.setBackgroundColor(Color.parseColor("#f7f7f7"));
}
else {
tv4.setLayoutParams(new
TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
TableRow.LayoutParams.WRAP_CONTENT));
tv4.setPadding(5, 0, 1, 5);
layAmounts.setBackgroundColor(Color.parseColor("#ffffff"));
}
tv4.setGravity(Gravity.RIGHT);
if (i == -1) {
tv4.setText("Inv.Amount");
tv4.setBackgroundColor(Color.parseColor("#f7f7f7"));
tv4.setTextSize(TypedValue.COMPLEX_UNIT_PX, smallTextSize);
}
else {
tv4.setBackgroundColor(Color.parseColor("#ffffff"));
tv4.setTextColor(Color.parseColor("#000000"));
tv4.setText(decimalFormat.format(row.invoiceAmount));
tv4.setTextSize(TypedValue.COMPLEX_UNIT_PX, textSize);
}
layAmounts.addView(tv4);
if (i > -1) {
final TextView tv4b = new TextView(this);
tv4b.setLayoutParams(new
TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
TableRow.LayoutParams.WRAP_CONTENT));
tv4b.setGravity(Gravity.RIGHT);
tv4b.setTextSize(TypedValue.COMPLEX_UNIT_PX, textSize);
tv4b.setPadding(2, 2, 1, 5);
tv4b.setTextColor(Color.parseColor("#00afff"));
tv4b.setBackgroundColor(Color.parseColor("#ffffff"));
String due = "";
if (row.amountDue.compareTo(new BigDecimal(0.01)) == 1) {
due = "Due:" + decimalFormat.format(row.amountDue);
due = due.trim();
}
tv4b.setText(due);
layAmounts.addView(tv4b);
}
// add table row
final TableRow tr = new TableRow(this);
tr.setId(i + 1);
TableLayout.LayoutParams trParams = new
TableLayout.LayoutParams(TableLayout.LayoutParams.MATCH_PARENT,
TableLayout.LayoutParams.WRAP_CONTENT);
trParams.setMargins(leftRowMargin, topRowMargin, rightRowMargin,
bottomRowMargin);
tr.setPadding(0,0,0,0);
tr.setLayoutParams(trParams);
tr.addView(tv);
tr.addView(tv2);
tr.addView(layCustomer);
tr.addView(layAmounts);
if (i > -1) {
tr.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
TableRow tr = (TableRow) v;
}
});
}
mTableLayout.addView(tr, trParams);
if (i > -1) {
// add separator row
final TableRow trSep = new TableRow(this);
TableLayout.LayoutParams trParamsSep = new
TableLayout.LayoutParams(TableLayout.LayoutParams.MATCH_PARENT,
TableLayout.LayoutParams.WRAP_CONTENT);
trParamsSep.setMargins(leftRowMargin, topRowMargin,
rightRowMargin, bottomRowMargin);
trSep.setLayoutParams(trParamsSep);
TextView tvSep = new TextView(this);
TableRow.LayoutParams tvSepLay = new
TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
TableRow.LayoutParams.WRAP_CONTENT);
tvSepLay.span = 4;
tvSep.setLayoutParams(tvSepLay);
tvSep.setBackgroundColor(Color.parseColor("#d9d9d9"));
tvSep.setHeight(1);
trSep.addView(tvSep);
mTableLayout.addView(trSep, trParamsSep);
}
}
}
class LoadDataTask extends AsyncTask<Integer, Integer, String> {
@Override
protected String doInBackground(Integer... params) {
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
}
return "Task Completed.";
}
@Override
protected void onPostExecute(String result) {
mProgressBar.hide();
loadData();
}
@Override
protected void onPreExecute() {
}
@Override
protected void onProgressUpdate(Integer... values) {
}
}
}步骤4 - 将以下代码添加到src/Invoices.java。
package com.app.sample;
import java.math.BigDecimal;
import java.util.Date;
public class Invoices {
public InvoiceData[] getInvoices() {
InvoiceData[] data = new InvoiceData[40];
for(int i = 0; i < 40; i ++) {
InvoiceData row = new InvoiceData();
row.id = (i+1);
row.invoiceNumber = row.id;
row.amountDue = BigDecimal.valueOf(20.00 * i);
row.invoiceAmount = BigDecimal.valueOf(120.00 * (i+1));
row.invoiceDate = new Date();
row.customerName = "Yuvan Shankar Raja";
row.customerAddress = "1112, Chennai, India";
data[i] = row;
}
return data;
}
}步骤5 - 将以下代码添加到src/InvoiceData.java。
package com.app.sample;
import java.math.BigDecimal;
import java.util.Date;
public class InvoiceData {
public int id;
public int invoiceNumber;
public Date invoiceDate;
public String customerName;
public String customerAddress;
public BigDecimal invoiceAmount;
public BigDecimal amountDue;
}步骤6 - 将以下代码添加到Manifests/AndroidManifest.xml。
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.app.sample" > <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round" android:supportsRtl="true" android:theme="@style/AppTheme" > <activity android:name=".MainActivity" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest>
让我们尝试运行您的应用程序。我假设您已将您的实际Android移动设备连接到您的电脑。要从Android Studio运行应用程序，请打开您项目的其中一个活动文件，然后单击工具栏中的运行
图标。选择您的移动设备作为选项，然后检查您的移动设备，它将显示您的默认屏幕 -
更新于：2020年7月7日
8K+ 次浏览
广告