Android--界面控件

版权声明：孜孜不辍 https://blog.csdn.net/calculate23/article/details/85030826

前言

常用的界面控件：
1，TextView（文本框）
2，EditText（编辑框）
3，Button（按钮，继承于TextView），ImageButton显示图片的按钮
4，CheckBox（复选框）
5，RadioButton（单选按钮）
6，Spinner（下拉列表）

---

Android代码：

<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" 
    android:layout_margin="10dp">

    <TableRow
        android:id="@+id/tableRow1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" >

        <TextView
            android:id="@+id/textView1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textSize="25sp"
            android:text="姓名" />

        <EditText
            android:id="@+id/editText1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:ems="10" >

            <requestFocus />
        </EditText>
    </TableRow>

    <TableRow
        android:id="@+id/tableRow2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" >

        <TextView
            android:id="@+id/textView2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textSize="25sp"
            android:text="性别" />

        <RadioGroup
            android:id="@+id/radioGroup1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="horizontal" >

            <RadioButton
                android:id="@+id/radio0"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:checked="true"
                android:text="男" />

            <RadioButton
                android:id="@+id/radio1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="女" />

        </RadioGroup>

    </TableRow>

    <TableRow
        android:id="@+id/tableRow3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" >

        <TextView
            android:id="@+id/textView3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textSize="25sp"
            android:text="星座" />

        <Spinner
            android:id="@+id/spinner1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

    </TableRow>

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="30sp"
        android:text="确定" />

</TableLayout>

MainActivity:

package cn.zhuangzhihuang.mywedget;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RadioGroup;
import android.widget.RadioGroup.OnCheckedChangeListener;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {

    private String sex;
	private String sCon;
	private String[] DB = {"白羊座","狮子座","金牛座","射手座","处女座","摩羯座"};

	@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
//        final TextView tv_text = (TextView) findViewById(R.id.textView1);
        final EditText ed_text = (EditText) findViewById(R.id.editText1);
        Button btn1 = (Button) findViewById(R.id.button1);
        RadioGroup radioGroup1 = (RadioGroup) findViewById(R.id.radioGroup1);
//        RadioGroup radio1 = (RadioGroup) findViewById(R.id.radio1);
        Spinner sp1 = (Spinner) findViewById(R.id.spinner1);
        
        sex = "男";
        
        radioGroup1.setOnCheckedChangeListener(new OnCheckedChangeListener() {
			
			@Override
			public void onCheckedChanged(RadioGroup group, int checkedId) {
				// TODO Auto-generated method stub
				if(checkedId == R.id.radio0) {
					sex = "男";
				}else {
					sex = "女";
				}
			}
		});
        
        
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_spinner_dropdown_item, DB);
        sp1.setAdapter(adapter);

        
        sp1.setOnItemSelectedListener(new OnItemSelectedListener() {

			@Override
			public void onItemSelected(AdapterView<?> parent, View view,
					int position, long id) {
				// TODO Auto-generated method stub
				sCon = DB[(int)id];
			}

			@Override
			public void onNothingSelected(AdapterView<?> parent) {
				// TODO Auto-generated method stub
				
			}
		});
        
        btn1.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				String name = ed_text.getText().toString().trim();
				if(name.isEmpty()) {
					Toast.makeText(MainActivity.this, "姓名不能为空!", 0).show();
					return ;
				}
				String temp = name + "是" + sCon + sex +"生";
				Toast.makeText(MainActivity.this, temp, 0).show();
			}
		});
        
        
        
        
    //    Toast.makeText(context, text, duration)  显示最下面的文本框
    }
}

效果：