Android学习笔记-常用控件
单选按钮 Radio
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genderGroup = (RadioGroup) findViewById(R.id.genderGroup);
maleButton = (RadioButton) findViewById(R.id.maleButton);
femaleButton = (RadioButton) findViewById(R.id.femaleButton);
//...
genderGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
// TODO Auto-generated method stub
if (femaleButton.getId() == checkedId) {
System.out.println("female");
Toast.makeText(MainActivity.this, "female",
Toast.LENGTH_SHORT).show();
} else if (maleButton.getId() == checkedId) {
System.out.println("female");
Toast.makeText(MainActivity.this, "male",
Toast.LENGTH_SHORT).show();
}
}
});多选 CheckBox

swimBox = (CheckBox) findViewById(R.id.swim);
runBox = (CheckBox) findViewById(R.id.run);
readBox = (CheckBox) findViewById(R.id.read);
//...
swimBox.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
// TODO Auto-generated method stub
if (isChecked) {
System.out.println("Swim is checked");
} else {
System.out.println("Swim is unchecked");
}
}
});
readBox.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
// TODO Auto-generated method stub
if (isChecked) {
System.out.println("Read is checked");
} else {
System.out.println("Read is unchecked");
}
}
});
runBox.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
// TODO Auto-generated method stub
if (isChecked) {
System.out.println("Run is checked");
} else {
System.out.println("Run is unchecked");
}
}
});
}进度条 ProgressBar

public class MainActivity extends ActionBarActivity {
private ProgressBar firstBar = null;
private ProgressBar secondBar = null;
private Button myButon = null;
private int i = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
firstBar = (ProgressBar) findViewById(R.id.firstBar);
secondBar = (ProgressBar) findViewById(R.id.secondBar);
myButon = (Button) findViewById(R.id.myButton);
myButon.setOnClickListener(new ButtonListener());
}
class ButtonListener implements OnClickListener{
@Override
public void onClick(View v) {
if (i == 0) {
firstBar.setVisibility(View.VISIBLE);
secondBar.setVisibility(View.VISIBLE);
}else if (i < firstBar.getMax()) {
//设置朱进度条的值
firstBar.setProgress(i);
//设置第二进度条的值
secondBar.setSecondaryProgress(i + 10);
//默认的进度条无法显示进行的状态
//secondBar.setProgress(i);
}else {
firstBar.setVisibility(View.GONE);
secondBar.setVisibility(View.GONE);
}
i = i + 10;
}
}
}列表 ListView

main.xml
user.xml
MainActivity.java
public class MainActivity extends ListActivity{
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ArrayList> list = new ArrayList>();
HashMap map1 = new HashMap();
HashMap map2 = new HashMap();
HashMap map3 = new HashMap();
map1.put("user_name", "admin1");
map1.put("user_ip", "192.168.24.214");
map2.put("user_name", "admin2");
map2.put("user_ip", "192.168.24.215");
map3.put("user_name", "admin3");
map3.put("user_ip", "192.168.24.216");
list.add(map1);
list.add(map2);
list.add(map3);
SimpleAdapter listAdapter = new SimpleAdapter(this, list, R.layout.user, new String[]{"user_name", "user_ip"}, new int[]{R.id.user_ip, R.id.user_name});
setListAdapter(listAdapter);
}
@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
// TODO Auto-generated method stub
super.onListItemClick(l, v, position, id);
System.out.println("id:" + id);
System.out.println("position:" + position);
}
}
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