1.下拉列表Spinner
1.1.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" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="com.rj141.sb.kongjian.MainActivity"> <LinearLayout android:orientation="horizontal" android:layout_width="match_parent" android:layout_height="wrap_content"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="18dp" android:text="请选择您最喜欢的水果:" /> <Spinner android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/spinner" /> </LinearLayout> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="18dp" android:id="@+id/tv" /> </LinearLayout>Spinner是下拉列表的组件
1.2.MainActivity.class
public class MainActivity extends AppCompatActivity { private Spinner s; String[] data=new String[]{"苹果","雪梨","西瓜","葡萄","橙子","草莓"}; private TextView tv; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); tv= (TextView) this.findViewById(R.id.tv); s= (Spinner) this.findViewById(R.id.spinner); s.setAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,data)); s.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { String str=data[position]; tv.setText("最喜欢的水果是:"+str); } @Override public void onNothingSelected(AdapterView<?> parent) { } }); } }s.setAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,data));android.R.layout.simple_list_item_1是指安卓自带的下拉列表格式,data是数据源;
s.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener()){..};是下拉列表的监听
2.日期选择器
2.1.activity.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" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="com.rj141.sb.kongjian.DateActivity"> <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:textSize="20dp" android:id="@+id/tv" /> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="日历" android:id="@+id/btndate" /> </LinearLayout>2.2.DateActivity.class
public class DateActivity extends ActionBarActivity { private Button btn; private TextView tv; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_date); btn=(Button)this.findViewById(R.id.btndate); tv= (TextView) this.findViewById(R.id.tv); btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { new DatePickerDialog(DateActivity.this, new DatePickerDialog.OnDateSetListener() { @Override public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) { tv.setText("您的出生日期是:"+String.format("%d-%d-%d",year,monthOfYear+1,dayOfMonth)); } },2000,1,2).show(); } }); } }DatePickerDialog日历选择器的对话框,监听为OnDateSetListener(){..}
3.时间选择器
3.1.布局
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="com.rj141.sb.kongjian.DateActivity"> <LinearLayout android:orientation="horizontal" android:layout_width="match_parent" android:layout_height="wrap_content"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="20dp" android:text="几点吃饭:" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="20dp" android:id="@+id/tv" /> </LinearLayout> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="时间" android:id="@+id/btndate" /> </LinearLayout>3.2.Java文件
public class DateActivity extends ActionBarActivity { private Button btn; private TextView tv; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_date); btn=(Button)this.findViewById(R.id.btndate); tv= (TextView) this.findViewById(R.id.tv); btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { new TimePickerDialog(DateActivity.this, new TimePickerDialog.OnTimeSetListener() { @Override public void onTimeSet(TimePicker view, int hourOfDay, int minute) { tv.setText(String.format("%d:%d",hourOfDay,minute)); } //0,0指的是时间,true表示是否为24小时,true为24小时制 },0,0,true).show(); } }); } }
4.单项选择
4.1.布局
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="com.rj141.sb.kongjian.DateActivity"> <TextView android:layout_marginLeft="10dp" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="2+3=" android:textSize="22dp" /> <RadioGroup android:layout_marginLeft="20dp" android:layout_width="wrap_content" android:layout_height="wrap_content"> <RadioButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="A.2" android:id="@+id/rb1" /> <RadioButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="B.3" android:id="@+id/rb2" /> <RadioButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="C.4" android:id="@+id/rb3" /> <RadioButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="D.5" android:id="@+id/rb4" /> </RadioGroup> <Button android:id="@+id/submit" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="提交"/> </LinearLayout>4.2.Java文件
public class SingChoose extends AppCompatActivity { private Button btn; private RadioButton rbD; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.sing_choose); rbD= (RadioButton) this.findViewById(R.id.rb4); btn= (Button) this.findViewById(R.id.submit); btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if(rbD.isChecked()){ Toast.makeText(SingChoose.this,"正确,请加五分",Toast.LENGTH_SHORT).show(); } else { Toast.makeText(SingChoose.this,"错误,请减五分",Toast.LENGTH_SHORT).show(); } } }); } }
5.多项选择
5.1.布局
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="com.rj141.sb.kongjian.CheckChoose"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="20dp" android:text="你喜欢下列哪些物品?" /> <CheckBox android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="巧克力" android:id="@+id/cb1" /> <CheckBox android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="冰淇淋" android:id="@+id/cb2" /> <CheckBox android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="蛋糕" android:id="@+id/cb3" /> <CheckBox android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="啤酒" android:id="@+id/cb4" /> <CheckBox android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="肉" android:id="@+id/cb5" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="18dp" android:id="@+id/tv" /> </LinearLayout>5.2.Java文件
public class CheckChoose extends AppCompatActivity implements CompoundButton.OnCheckedChangeListener { private CheckBox cb1,cb2,cb3,cb4,cb5; private TextView tv; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.check_choose); tv= (TextView) this.findViewById(R.id.tv); cb1= (CheckBox) this.findViewById(R.id.cb1); cb2= (CheckBox) this.findViewById(R.id.cb2); cb3= (CheckBox) this.findViewById(R.id.cb3); cb4= (CheckBox) this.findViewById(R.id.cb4); cb5= (CheckBox) this.findViewById(R.id.cb5); cb1.setOnCheckedChangeListener(this); cb2.setOnCheckedChangeListener(this); cb3.setOnCheckedChangeListener(this); cb4.setOnCheckedChangeListener(this); cb5.setOnCheckedChangeListener(this); } @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { String str="您喜欢:"; if(cb1.isChecked()){ str+=cb1.getText()+","; } if(cb2.isChecked()){ str+=cb2.getText()+","; } if(cb3.isChecked()){ str+=cb3.getText()+","; } if(cb4.isChecked()){ str+=cb4.getText()+","; } if(cb5.isChecked()){ str+=cb5.getText()+","; } tv.setText(str); } }
时间: 2024-10-04 00:54:12