Android 基本控件使用

// 自动补齐的TextView

AutoCompleteTextView mPlace = (AutoCompleteTextView)findViewById(R.id.autoCompleteTextView1);

String[] books = new String[] { "rollen", "allen", "rollenren", "roll" };

// 先定义一个原始数据的适配器

ArrayAdapter adapter =new ArrayAdapter<String>

(MainActivity.this,android.R.layout.simple_dropdown_item_1line,books);

// 设定TextView的适配器

mPlace.setAdapter(adapter);

// 输入多个自动补齐的TextView

MultiAutoCompleteTextView mtexts = (MultiAutoCompleteTextView)findViewById(R.id.multiAutoCompleteTextView1);

// 设定TextView的适配器

mtexts.setAdapter(new ArrayAdapter<String>

(MainActivity.this, android.R.layout.simple_dropdown_item_1line,books));

// 设定适配器的 分割符，如逗号

mtexts.setTokenizer(new MultiAutoCompleteTextView.CommaTokenizer());

// 限定输入的字符的长度

final EditText text_filterred = (EditText)findViewById(R.id.editText1);

text_filterred.setFilters(new InputFilter[]{

new InputFilter.AllCaps(),

new InputFilter.LengthFilter(2)

});

// Button按钮实现Activity跳转传递参数

final Button btn = (Button)findViewById(R.id.button1);

btn.setOnClickListener(new OnClickListener(){

@Override

public void onClick(View v) {

Intent intent = new Intent();

intent.setClass(MainActivity.this, Test1Activity.class);

intent.putExtra("str", "come from first activity");

startActivity(intent);

}

});

// CheckBox 的设定及响应事件

final CheckBox check_button = (CheckBox) findViewById(R.id.checkBox1);

check_button.setOnClickListener(new OnClickListener(){

@Override

public void onClick(View v) {

tx.setText(check_button.isChecked()?"选中了":"没选中");

}

});

// ToggleButton的设定及响应事件

final ToggleButton toggleButton = (ToggleButton)findViewById(R.id.toggleButton1);

toggleButton.setOnCheckedChangeListener(new OnCheckedChangeListener(){

@Override

public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {

tx.setText(isChecked?"选中的":"未选中");

}

});

// 单选按钮RadioGroup的设定及响应事件

final RadioGroup group = (RadioGroup)findViewById(R.id.radioGroup1);

// 清除选择

group.clearCheck();

group.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener(){

@Override

public void onCheckedChanged(RadioGroup group, int checkedId) {

if(checkedId!=-1){

RadioButton rb =(RadioButton) findViewById(checkedId);

if(rb!=null){

tx.setText("You chose:"+rb.getText());

}

}

}

});

// 下拉列表Spinner的设定及响应事件

<Spinner

android:id="@+id/spinner1"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:entries="@array/colors"

android:prompt="@string/spin_prompt" />

利用array 里面的内容指定Spinner 的数据源

spin = (Spinner) findViewById(R.id.spinner1);

spin.setOnItemSelectedListener(new OnItemSelectedListener(){

@Override

public void onItemSelected(AdapterView<?> arg0, View arg1,

int arg2, long arg3) {

TextView tvn=(TextView)arg1;//获取其中的TextView

if(tvn!=null){

tx.setText(tvn.getText().toString());

}

}

@Override

public void onNothingSelected(AdapterView<?> arg0) {

// TODO Auto-generated method stub

}

});