我正在开发一个Android应用程序。这就是我想要的。
有性别旋转器;男性和女性。当用户选择男性时,它会出现image1,但是当选择女性时,image1会消失。我正在考虑使用set.alpha(0)。
这是我的代码。
public class Froyo2Activity extends Activity {
Spinner genderSpin;
ImageView image1;
Button submit;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_froyo2);
addButtonListener();
}
public void addButtonListener(){
submit = (Button)findViewById(R.id.submit);
image1 = (ImageView)findViewById(R.id.imageView1);
genderSpin = (Spinner)findViewById(R.id.gender_spin);
submit.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View arg0) {
if(genderSpin.getSelectedItemPosition() == 1){
image1.setAlpha(0);
}
}
});
}
}
这是res / layout
中的代码froyo2.xml<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/widget54"
android:layout_width="wrap_content"
android:layout_height="fill_parent" >
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="wrap_content"
android:layout_height="819dp"
tools:context=".RelativeActivity" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:text="Welcome"
android:textAppearance="?android:attr/textAppearanceSmall" />
<LinearLayout
android:id="@+id/linearLayout1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/textView1" >
<TextView
android:id="@+id/textView2"
android:layout_width="131dp"
android:layout_height="wrap_content"
android:text="Priority Level"
android:textAppearance="?android:attr/textAppearanceMedium" />
</LinearLayout>
<LinearLayout
android:id="@+id/linearLayout2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="@+id/linearLayout1"
android:layout_toRightOf="@+id/linearLayout1" >
<Spinner
android:id="@+id/prior_spin"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:entries="@array/priorArray"
android:prompt="@string/prior_prompt" />
</LinearLayout>
<LinearLayout
android:id="@+id/linearLayout3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="@+id/linearLayout2"
android:layout_toRightOf="@+id/linearLayout2" >
</LinearLayout>
<EditText
android:id="@+id/editText2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/linearLayout2"
android:layout_alignParentRight="true"
android:layout_below="@+id/editText1"
android:ems="10" >
<requestFocus />
</EditText>
<TextView
android:id="@+id/textView6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/button1"
android:layout_alignBottom="@+id/button1"
android:layout_alignParentLeft="true"
android:text="Age"
android:textAppearance="?android:attr/textAppearanceMedium" />
<Button
android:id="@+id/button2"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/button1"
android:layout_alignRight="@+id/button1"
android:layout_below="@+id/button1"
android:text="5.1" />
<Button
android:id="@+id/button3"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/button2"
android:layout_alignRight="@+id/button2"
android:layout_below="@+id/button2"
android:text="Select ETA" />
<TextView
android:id="@+id/textView7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/button1"
android:text="BP/P"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="@+id/textView8"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/button3"
android:layout_alignBottom="@+id/button3"
android:layout_alignLeft="@+id/textView9"
android:text="ETA"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="@+id/textView9"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/button3"
android:layout_marginTop="15dp"
android:text="Location"
android:textAppearance="?android:attr/textAppearanceMedium" />
<Button
android:id="@+id/submit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignRight="@+id/editText6"
android:text="Submit 5.1" />
<EditText
android:id="@+id/editText3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/button3"
android:layout_alignParentRight="true"
android:layout_below="@+id/button3"
android:ems="10"
android:inputType="textPostalAddress" />
<EditText
android:id="@+id/editText4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/editText3"
android:layout_alignParentRight="true"
android:layout_below="@+id/editText3"
android:ems="10" />
<TextView
android:id="@+id/textView10"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/textView5"
android:layout_alignTop="@+id/editText4"
android:layout_toLeftOf="@+id/editText4"
android:text="Special Handling"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="@+id/textView11"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/textView10"
android:layout_below="@+id/editText4"
android:layout_marginTop="15dp"
android:text="Drug"
android:textAppearance="?android:attr/textAppearanceMedium" />
<EditText
android:id="@+id/editText5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_below="@+id/editText4"
android:layout_toRightOf="@+id/textView10"
android:ems="10" />
<TextView
android:id="@+id/textView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/linearLayout2"
android:text="Firstname"
android:textAppearance="?android:attr/textAppearanceMedium" />
<EditText
android:id="@+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/linearLayout2"
android:layout_alignParentRight="true"
android:layout_alignTop="@+id/textView4"
android:ems="10" />
<TextView
android:id="@+id/textView5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/editText2"
android:layout_alignBottom="@+id/editText2"
android:layout_alignRight="@+id/textView4"
android:text="Lastname"
android:textAppearance="?android:attr/textAppearanceMedium" />
<Button
android:id="@+id/button1"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/editText2"
android:layout_alignParentRight="true"
android:layout_below="@+id/editText2"
android:text="OriFroyoAge" />
<EditText
android:id="@+id/editText6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/editText5"
android:layout_alignParentRight="true"
android:layout_below="@+id/editText5"
android:ems="10" />
<TextView
android:id="@+id/textView12"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/editText6"
android:layout_alignBottom="@+id/editText6"
android:layout_alignParentLeft="true"
android:text="Diagnostic"
android:textAppearance="?android:attr/textAppearanceMedium" />
<ImageView
android:id="@+id/imageView2"
android:layout_width="wrap_content"
android:layout_height="300dp"
android:layout_alignParentRight="true"
android:layout_alignTop="@+id/imageView1"
android:layout_toRightOf="@+id/imageView1"
android:src="@drawable/back2" />
<ImageView
android:id="@+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="300dp"
android:layout_below="@+id/editText6"
android:layout_toRightOf="@+id/textView10"
android:src="@drawable/malefull" />
<TextView
android:id="@+id/textView13"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignTop="@+id/imageView1"
android:layout_marginTop="124dp"
android:text="Injury(s)"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="@+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/textView1"
android:layout_toRightOf="@+id/linearLayout2"
android:layout_weight="1"
android:text="Gender"
android:textAppearance="?android:attr/textAppearanceMedium" />
<Spinner
android:id="@+id/gender_spin"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignTop="@+id/textView3"
android:entries="@array/genderArray"
android:prompt="@string/gender_prompt" />
</RelativeLayout>
</ScrollView>
这个是在res / layout-land
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/widget54"
android:layout_width="wrap_content"
android:layout_height="fill_parent" >
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="798dp"
android:layout_height="wrap_content"
tools:context=".RelativeActivity" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:text="Welcome"
android:textAppearance="?android:attr/textAppearanceSmall" />
<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/textView1"
android:text="Priority Level"
android:textAppearance="?android:attr/textAppearanceMedium" />
<Spinner
android:id="@+id/spinner1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/textView2"
android:layout_toLeftOf="@+id/spinner2"
android:entries="@array/priorArray"
android:prompt="@string/prior_prompt" />
<Spinner
android:id="@+id/spinner2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignRight="@+id/textView3"
android:layout_below="@+id/textView3"
android:layout_toRightOf="@+id/textView7"
android:entries="@array/genderArray"
android:prompt="@string/gender_prompt" />
<TextView
android:id="@+id/textView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/spinner1"
android:text="Firstname"
android:textAppearance="?android:attr/textAppearanceMedium" />
<EditText
android:id="@+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignRight="@+id/spinner2"
android:layout_below="@+id/textView4"
android:ems="10" >
<requestFocus />
</EditText>
<TextView
android:id="@+id/textView5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/editText1"
android:text="Lastname"
android:textAppearance="?android:attr/textAppearanceMedium" />
<EditText
android:id="@+id/editText2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignRight="@+id/editText1"
android:layout_below="@+id/textView5"
android:ems="10" />
<TextView
android:id="@+id/textView6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/editText2"
android:text="Age"
android:textAppearance="?android:attr/textAppearanceMedium" />
<Button
android:id="@+id/button1"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignRight="@+id/textView5"
android:layout_below="@+id/textView6"
android:text="Age" />
<Button
android:id="@+id/button2"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="@+id/button1"
android:layout_toLeftOf="@+id/button3"
android:layout_toRightOf="@+id/textView4"
android:text="BP/P" />
<Button
android:id="@+id/button3"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/textView8"
android:layout_alignRight="@+id/editText2"
android:layout_below="@+id/textView8"
android:text="ETA" />
<TextView
android:id="@+id/textView7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/button2"
android:layout_toRightOf="@+id/textView4"
android:text="BP/P"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="@+id/textView8"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/button2"
android:layout_alignLeft="@+id/textView3"
android:text="ETA"
android:textAppearance="?android:attr/textAppearanceMedium" />
<ImageView
android:id="@+id/imageView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/textView1"
android:layout_toLeftOf="@+id/imageView1"
android:src="@drawable/malefull" />
<TextView
android:id="@+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/spinner1"
android:layout_toLeftOf="@+id/imageView2"
android:text="Gender"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="@+id/textView9"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/button1"
android:text="Location"
android:textAppearance="?android:attr/textAppearanceMedium" />
<EditText
android:id="@+id/editText3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/textView9"
android:layout_toLeftOf="@+id/imageView2"
android:ems="10" />
<TextView
android:id="@+id/textView10"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/editText3"
android:text="Special Handling"
android:textAppearance="?android:attr/textAppearanceMedium" />
<EditText
android:id="@+id/editText4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignRight="@+id/editText3"
android:layout_below="@+id/textView10"
android:ems="10" />
<TextView
android:id="@+id/textView11"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/editText4"
android:text="Drug(s)"
android:textAppearance="?android:attr/textAppearanceMedium" />
<EditText
android:id="@+id/editText5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/textView11"
android:layout_toLeftOf="@+id/imageView2"
android:ems="10" />
<TextView
android:id="@+id/textView12"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/editText5"
android:text="Diagnostic"
android:textAppearance="?android:attr/textAppearanceMedium" />
<EditText
android:id="@+id/editText6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/textView12"
android:layout_toLeftOf="@+id/imageView2"
android:ems="10" />
<Button
android:id="@+id/submit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_below="@+id/editText6"
android:text="Submit" />
<ImageView
android:id="@+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/imageView2"
android:layout_alignParentRight="true"
android:src="@drawable/back2" />
</RelativeLayout>
</ScrollView>
然后我在模拟器中运行它,当单击按钮提交时,表示强制关闭应用程序。我已经制定了断点,我认为genderSpin.getSelectedItemPosition()
是原因。但是我如何获得用户为微调器选择的值?
你的帮助很感激。
===编辑解决方案.STATUS CLOSED ===
感谢那些帮助我很多的人。这是我的最终解决方案。我需要先创建SpinnerAdapter来检索所选微调器的上下文。
我也遵循了here
的教程我的上一个代码是
genderSpin = (Spinner)findViewById(R.id.gender_spin);
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this,
R.array.genderArray, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
genderSpin.setAdapter(adapter);
genderSpin.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> parent, View arg1, int pos, long arg3){
String fontname = parent.getItemAtPosition(pos).toString();
Toast.makeText(parent.getContext(), "The External Font Is " +fontname, Toast.LENGTH_LONG).show();
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});
在选择的微调项目之后,如果选择女性并且如果选择男性则选择女性并吐出“外部字体是男性”,它将覆盖“外部字体是女性”。谢谢你的帮助。希望这对那些寻求帮助的人来说是一个很好的指导。
答案 0 :(得分:2)
请你发布你的微调器OnItemSelectedListener代码。在按钮onclick中,只添加了获取微调器位置的代码。我在下面的代码中用于获取用户选择的微调项目。
Spinner spinner = (Spinner) findViewById(R.id.spinner);
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
this, R.array.planets_array, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
spinner.setOnItemSelectedListener(listener);
private OnItemSelectedListener listener =new OnItemSelectedListener() {
//do what ever you want to do when item selected
public void onItemSelected(AdapterView<?> parent, View arg1, int pos,
long arg3) {
// TODO Auto-generated method stub
fontname=parent.getItemAtPosition(pos).toString();
Toast.makeText(parent.getContext(), "The External Font Is " +fontname, Toast.LENGTH_LONG).show();
}
}