主要是讲checkbox的使用，其实接触过html都应该知道表单中checkbox选择按钮，在这里我在一个activity中添加4个checkbox和一个button主要是通过button触发事件获取选中的checkbox中的值，我定义了一个checkbox.xml的应该layout布局
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical"> <CheckBox android:id="@+id/plain_cb" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Plain" /> <CheckBox android:id="@+id/serif_cb" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Serif" /> <CheckBox android:id="@+id/bold_cb" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Bold" /> <CheckBox android:id="@+id/italic_cb" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Italic" /> <Button android:id="@+id/getValue" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="获取CheckBox值" /></LinearLayout>
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下面是实现代码 :
public class CheckBoxActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.checkbox); final CheckBox plain = (CheckBox) findViewById(R.id.plain_cb); final CheckBox serif = (CheckBox) findViewById(R.id.serif_cb); final CheckBox bold = (CheckBox) findViewById(R.id.bold_cb); final CheckBox italic = (CheckBox) findViewById(R.id.italic_cb); Button getValue = (Button) findViewById(R.id.getValue); getValue.setOnClickListener(new OnClickListener() { public void onClick(View v) { String title = "你选择了"; if (plain.isChecked()) { title += "plain"; } if (serif.isChecked()) { title += "serif"; } if (bold.isChecked()) { title += "bold"; } if (italic.isChecked()) { title += "italic"; } setTitle(title); } }); }}?
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下面是另一个
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<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <TextView android:text="@+id/TextView01" android:id="@+id/TextView01" android:layout_width="wrap_content" android:layout_height="wrap_content"></TextView> <CheckBox android:text="@+id/CheckBox01" android:id="@+id/CheckBox01" android:layout_width="wrap_content" android:layout_height="wrap_content"></CheckBox> <CheckBox android:text="@+id/CheckBox02" android:id="@+id/CheckBox02" android:layout_width="wrap_content" android:layout_height="wrap_content"></CheckBox> <CheckBox android:text="@+id/CheckBox03" android:id="@+id/CheckBox03" android:layout_width="wrap_content" android:layout_height="wrap_content"></CheckBox> <CheckBox android:text="@+id/CheckBox04" android:id="@+id/CheckBox04" android:layout_width="wrap_content" android:layout_height="wrap_content"></CheckBox> <Button android:text="@+id/Button01" android:id="@+id/Button01" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button></LinearLayout>
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public class CheckBoxDemo extends Activity { private TextView m_txtView; private CheckBox m_CheckBox1; private CheckBox m_CheckBox2; private CheckBox m_CheckBox3; private CheckBox m_CheckBox4; private Button m_Button; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); m_txtView = (TextView) this.findViewById(R.id.TextView01); m_CheckBox1 = (CheckBox) this.findViewById(R.id.CheckBox01); m_CheckBox2 = (CheckBox) this.findViewById(R.id.CheckBox02); m_CheckBox3 = (CheckBox) this.findViewById(R.id.CheckBox03); m_CheckBox4 = (CheckBox) this.findViewById(R.id.CheckBox04); m_txtView.setText("调查：你喜欢Android是因为什么原因？"); m_CheckBox1.setText("好看"); m_CheckBox2.setText("好用"); m_CheckBox3.setText("免费"); m_CheckBox4.setText("应用广泛"); m_CheckBox1.setOnCheckedChangeListener(m_checkboxListener); m_CheckBox2.setOnCheckedChangeListener(m_checkboxListener); m_CheckBox3.setOnCheckedChangeListener(m_checkboxListener); m_CheckBox4.setOnCheckedChangeListener(m_checkboxListener); m_Button = (Button) this.findViewById(R.id.Button01); m_Button.setOnClickListener(m_BtnListener); m_Button.setText("提交"); } private OnClickListener m_BtnListener = new OnClickListener() { public void onClick(View arg0) { // TODO Auto-generated method stub if (arg0.getId() == R.id.Button01) { int value = 0; if (m_CheckBox1.isChecked()) { value++; } if (m_CheckBox2.isChecked()) { value++; } if (m_CheckBox3.isChecked()) { value++; } if (m_CheckBox4.isChecked()) { value++; } Toast.makeText(getBaseContext(), "你选择了 " + value + "项", Toast.LENGTH_SHORT).show(); } } }; private CheckBox.OnCheckedChangeListener m_checkboxListener = new CheckBox.OnCheckedChangeListener() { public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { // TODO Auto-generated method stub if (buttonView.getId() == R.id.CheckBox01) { if (isChecked) { Toast.makeText(getBaseContext(), "CheckBox 01 check ", Toast.LENGTH_SHORT).show(); } else { Toast.makeText(getBaseContext(), "CheckBox 01 ucheck ", Toast.LENGTH_SHORT).show(); } } if (buttonView.getId() == R.id.CheckBox02) { if (isChecked) { Toast.makeText(getBaseContext(), "CheckBox 02 check ", Toast.LENGTH_SHORT).show(); } else { Toast.makeText(getBaseContext(), "CheckBox 02 ucheck ", Toast.LENGTH_SHORT).show(); } } if (buttonView.getId() == R.id.CheckBox03) { if (isChecked) { Toast.makeText(getBaseContext(), "CheckBox 03 check ", Toast.LENGTH_SHORT).show(); } else { Toast.makeText(getBaseContext(), "CheckBox 03 ucheck ", Toast.LENGTH_SHORT).show(); } } if (buttonView.getId() == R.id.CheckBox04) { if (isChecked) { Toast.makeText(getBaseContext(), "CheckBox 04 check ", Toast.LENGTH_SHORT).show(); } else { Toast.makeText(getBaseContext(), "CheckBox 04 ucheck ", Toast.LENGTH_SHORT).show(); } } } };}?