android常用控件总结

main.xml

android:id=\ android:layout_width=\ android:layout_height=\ android:text=\ />

android:id=\ android:layout_width=\ android:layout_height=\ android:orientation=\ android:layout_x=\ android:layout_y=\ >

android:id=\ android:layout_width=\ android:layout_height=\ android:text=\ />

android:id=\ android:layout_width=\ android:layout_height=\ android:text=\ />

android:id=\ android:layout_width=\ android:layout_height=\ android:text=\ />

android:id=\ android:layout_width=\ android:layout_height=\ android:text=\ />

public class Activity01 extends Activity{ TextView m_TextView; RadioGroup m_RadioGroup;

RadioButton m_Radio1, m_Radio2, m_Radio3, m_Radio4;

@Override

public void onCreate(Bundle savedInstanceState){ super.onCreate(savedInstanceState); setContentView(R.layout.main);

m_RadioGroup = (RadioGroup) findViewById(R.id.RadioGroup01);//获得RadioGroup对象

m_Radio1 = (RadioButton) findViewById(R.id.RadioButton1);//获得4个RadioButton对象

m_Radio2 = (RadioButton) findViewById(R.id.RadioButton2); m_Radio3 = (RadioButton) findViewById(R.id.RadioButton3); m_Radio4 = (RadioButton) findViewById(R.id.RadioButton4);

/* 设置事件监听 */

m_RadioGroup.setOnCheckedChangeListener(new

RadioGroup.OnCheckedChangeListener() {---------------------------RadioGroup监听器

@Override

public void onCheckedChanged(RadioGroup group, int checkedId){

if (checkedId == m_Radio2.getId()){

DisplayToast(\正确答案：\+ m_Radio2.getText() + \，恭喜你，回答正确！\ }else{

DisplayToast(\请注意，回答错误！\ } } }); }

public void DisplayToast(String str)//显示Toast{

Toast toast = Toast.makeText(this, str, Toast.LENGTH_LONG); //设置toast显示的位置

toast.setGravity(Gravity.TOP, 0, 220); //显示该Toast toast.show(); } }

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AutoCompletTextView 和MultiAutoCompleteTextView 作用：自动提示 下面例中用到了ArrayAdapter

autoCompletTextView.xml

android:id= \ android:layout_width=\ android:layout_height=\ />

android:id= \ android:layout_width=\ android:layout_height=\ />

//如何实现如果输入的字符不在其范围内的也能得到提示 是继承TextWatcher? public class Control_Auto extends Activity { //implements TextWatcher{} public TextView textView_auto;

private static final String[] string ={\hao\hao \hao ma\zheng de hao ma\

public void onCreate(Bundle savedInstanceState){ super.onCreate(savedInstanceState);

setContentView(R.layout.autocompletetextview);

//将可选内容与适配器ArrayAdapter连接