系列文章目录

文章目录

• 系列文章目录
• 前言
• 一、定义界面组件变量
• 二、对按钮点击事件进行处理

前言

在创建完界面布局的组件后，我们需要对界面组件变量进行定义，并对按钮点击事件进行处理

一、定义界面组件变量

在MainAbilitySlice文件中对TextField，Button，Text组件进行定义
代码如下：
package edu.zut.myapplication.slice;

import edu.zut.myapplication.ResourceTable;
import ohos.aafwk.ability.AbilitySlice;
import ohos.aafwk.content.Intent;
import ohos.agp.components.Button;
import ohos.agp.components.Text;
import ohos.agp.components.TextField;

public class MainAbilitySlice extends AbilitySlice {

private TextField textField1;private Button button1;private Text resultText;@Overridepublic void onStart(Intent intent) {    super.onStart(intent);    super.setUIContent(ResourceTable.Layout_ability_main);    textField1 = (TextField) findComponentById(ResourceTable.Id_TextField1);    button1 = (Button) findComponentById(ResourceTable.Id_button1);    resultText = (Text) findComponentById(ResourceTable.Id_resultText);}@Overridepublic void onActive() {    super.onActive();}@Overridepublic void onForeground(Intent intent) {    super.onForeground(intent);}

}

二、对按钮点击事件进行处理

 private static final HiLogLabel LOG_LABEL = new HiLogLabel(HiLog.LOG_APP,0x00201,"MainAbilitySlice");button1.setClickedListener(new Component.ClickedListener() { @Override public void onClick(Component component) {     String inputWord = textField1.getText();     HiLog.info(LOG_LABEL,inputWord); }    });

整体代码如下：
package edu.zut.myapplication.slice;

import edu.zut.myapplication.ResourceTable;
import ohos.aafwk.ability.AbilitySlice;
import ohos.aafwk.content.Intent;
import ohos.agp.components.Button;
import ohos.agp.components.Component;
import ohos.agp.components.Text;
import ohos.agp.components.TextField;
import ohos.hiviewdfx.HiLog;
import ohos.hiviewdfx.HiLogLabel;

public class MainAbilitySlice extends AbilitySlice {

private static final HiLogLabel LOG_LABEL = new HiLogLabel(HiLog.LOG_APP,0x00201,"MainAbilitySlice");private TextField textField1;private Button button1;private Text resultText;@Overridepublic void onStart(Intent intent) {    super.onStart(intent);    super.setUIContent(ResourceTable.Layout_ability_main);    textField1 = (TextField) findComponentById(ResourceTable.Id_TextField1);    button1 = (Button) findComponentById(ResourceTable.Id_button1);    resultText = (Text) findComponentById(ResourceTable.Id_resultText);    button1.setClickedListener(new Component.ClickedListener() { @Override public void onClick(Component component) {     String inputWord = textField1.getText();     HiLog.info(LOG_LABEL,inputWord); }    });}@Overridepublic void onActive() {    super.onActive();}@Overridepublic void onForeground(Intent intent) {    super.onForeground(intent);}

}

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