鸟语天空

基本视图

作者：追风剑情 发布于：2015-8-23 16:52 分类：Android

基本视图:

• TextView
• EditText
• Button
• ImageButton
• CheckBox
• ToggleButton
• RadioButton
• RadioGroup

一、创建活动

视图

<LinearLayout 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:orientation="vertical"
    tools:context="${relativePackage}.${activityClass}" >

    <Button
        android:id="@+id/btnSave"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="save" />

    <Button
        android:id="@+id/btnOpen"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Open" />
    
    <ImageButton
        android:id="@+id/btnImg1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:src="@drawable/ic_launcher" />
    
    <EditText
        android:id="@+id/txtName"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />
    
    <CheckBox
        android:id="@+id/chkAutosave"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Autosave" />
    
    <CheckBox
        android:id="@+id/star"
        style="?android:attr/starStyle"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Autosave" />
    
    <RadioGroup
        android:id="@+id/rdbGp1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical" >
    
        <RadioButton android:id="@+id/rdb1"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="Option 1"/>
        
        <RadioButton android:id="@+id/rdb2"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="Option 2"/>
    </RadioGroup>
    
    <ToggleButton android:id="@+id/toggle1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>
</LinearLayout>

代码

package com.example.androidtest;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.RadioGroup.OnCheckedChangeListener;
import android.widget.Toast;
import android.widget.ToggleButton;

public class BasicViews1Activity extends Activity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_basic_views1);
		
		Button btnOpen = (Button) findViewById(R.id.btnOpen);
		btnOpen.setOnClickListener(new View.OnClickListener() {
			@Override
			public void onClick(View v) {
				DisplayToast("You have clicked the Open button");
			}
		});
		
		Button btnSave = (Button) findViewById(R.id.btnSave);
		btnSave.setOnClickListener(new View.OnClickListener() {
			@Override
			public void onClick(View v) {
				DisplayToast("You have clicked the Save button");
			}
		});
		
		Button chkAutosave = (Button) findViewById(R.id.chkAutosave);
		chkAutosave.setOnClickListener(new View.OnClickListener() {
			@Override
			public void onClick(View v) {
				if(((CheckBox)v).isChecked())
					DisplayToast("CheckBox is checked");
				else
					DisplayToast("CheckBox is unchecked");
			}
		});
		
		RadioGroup radioGroup = (RadioGroup) findViewById(R.id.rdbGp1);
		radioGroup.setOnCheckedChangeListener(new OnCheckedChangeListener() {
			@Override
			public void onCheckedChanged(RadioGroup group, int checkedId) {
				RadioButton rb1 = (RadioButton) findViewById(R.id.rdb1);
				if(rb1.isChecked())
					DisplayToast("Option 1 checked");
				else
					DisplayToast("Option 2 checked");
			}
		});
		
		ToggleButton toggleButton = (ToggleButton) findViewById(R.id.toggle1);
		toggleButton.setOnClickListener(new View.OnClickListener() {
			@Override
			public void onClick(View v) {
				if(((ToggleButton)v).isChecked())
					DisplayToast("Toggle button is On");
				else
					DisplayToast("Toggle button is Off");
			}
		});
	}
	
	private void DisplayToast(String msg)
	{
		Toast.makeText(getBaseContext(), msg, Toast.LENGTH_LONG).show();
	}
}

运行效果

标签: Android