Spinner小记

一、<wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr>Activity部份代码

// Generate spinner entries using XML arrays

intvisiblelimitValuesId= R.array.account_settings_down_count_values;

intvisiblelimitEntriesId= R.array.account_settings_down_count_entries;

CharSequence[] visiblelimitValues = getResources().getTextArray(visiblelimitValuesId);

CharSequence[] visiblelimitEntries = getResources().getTextArray(visiblelimitEntriesId);

<wbr></wbr>

// Now create the array used by the Spinner

SpinnerOption[] checkVisiblelimits =newSpinnerOption[visiblelimitEntries.length];

for(inti = 0; i < visiblelimitEntries.length; i++) {

<wbr><wbr><wbr><wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>checkVisiblelimits[i] =newSpinnerOption(

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>Integer.valueOf(visiblelimitValues[i].toString()), visiblelimitEntries[i].toString());

}

<wbr></wbr>

ArrayAdapter<SpinnerOption> checkVisiblelimitsAdapte<wbr>r =</wbr>newArrayAdapter<SpinnerOption><wbr>(</wbr>this,android.R.layout.simple_spinner_item, checkVisiblelimits);

<wbr></wbr>checkVisiblelimitsAdapte<wbr>r.setDropDownViewResource(android.R.layout.</wbr>simple_spinner_dropdown_item);

downloadCount.setAdapter(checkVisiblelimitsAdapte<wbr>r);</wbr>

<wbr><wbr><wbr><wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>

SpinnerOption.setSpinnerOptionValue(downloadCount,<wbr></wbr>VISIBLE_LIMIT_DEFAULT);

二、<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>SpinnerOption代码

publicclassSpinnerOption {

<wbr><wbr><wbr></wbr></wbr></wbr>publicfinalObjectvalue;

<wbr></wbr>

<wbr><wbr><wbr></wbr></wbr></wbr>publicfinalStringlabel;

<wbr></wbr>

<wbr><wbr><wbr></wbr></wbr></wbr>publicstaticvoidsetSpinnerOptionValue(

Spinner spinner, Object value) {

<wbr><wbr><wbr><wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>for(inti = 0, count = spinner.getCount(); i < count; i++) {

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr><wbr></wbr>SpinnerOption so = (SpinnerOption)spinner.getItemAtPosition(i);

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>if(so.value.equals(value)) {

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>spinner.setSelection(i,true);

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>return;

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>}

<wbr><wbr><wbr><wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>}

<wbr><wbr><wbr></wbr></wbr></wbr>}

<wbr></wbr>

<wbr><wbr><wbr></wbr></wbr></wbr>publicSpinnerOption(Object value, String label) {

<wbr><wbr><wbr><wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>this.value= value;

<wbr><wbr><wbr><wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>this.label= label;

<wbr><wbr><wbr></wbr></wbr></wbr>}

<wbr></wbr>

<wbr><wbr><wbr></wbr></wbr></wbr>@Override

<wbr><wbr><wbr></wbr></wbr></wbr>publicString toString() {

<wbr><wbr><wbr><wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>returnlabel;

}

三、<wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr>如何获取Spinner选中项值

intvisibelLimit = (Integer)((SpinnerOption)downloadCount.getSelectedItem()).value;

<wbr></wbr>

四、

<PreferenceCategory android:title="@string/account_settings_download_title">

<wbr></wbr><wbr><wbr></wbr></wbr>

<wbr><wbr><wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr><ListPreference

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>android:layout="?android:attr/preferenceLayoutChild"

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>android:dependency="account_down"

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>android:key="account_settings_down"

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>android:defaultValue="never"

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>android:title="@string/account_settings_download_title"

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>android:entries="@array/account_settings_down_entries"

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>android:entryValues="@array/account_settings_down_values"

<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>android:dialogTitle="@string/account_settings_download_title"

/>

<wbr></wbr>

<wbr></wbr></PreferenceCategory>

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实例： 主要目的假如在values.xml文件中已定义6个StringArrays的Item的项目,在Spinner中属性已定义Entries绑定了数据，不修改这2个文件下修改代码，只显示4个Item。

意思是重新绑定下即可。

java代码

package luokan.commonui; import android.app.Activity; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.widget.AdapterView; import android.widget.AdapterView.OnItemSelectedListener; import android.widget.ArrayAdapter; import android.widget.Spinner; import android.widget.Toast; public class MainActivity extends Activity { private Spinner spinner; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); spinner = (Spinner) findViewById(R.id.spinner); /* * ArrayAdapter arrayadp = ArrayAdapter.createFromResource(this, * R.array.spinner_arrays,android.R.layout.simple_spinner_item); */ int arraysValueID = R.array.spinner_arrays; String[] entriesValue = getResources().getStringArray( arraysValueID); /*new arrays */ SpinnerOption[] optionsValue = new SpinnerOption[entriesValue.length-2]; for (int i = 0; i < optionsValue.length; i++) { optionsValue[i] = new SpinnerOption(entriesValue[i].toString()); } ArrayAdapter<SpinnerOption> arrayadp = new ArrayAdapter<SpinnerOption>( this, android.R.layout.simple_spinner_item, optionsValue); arrayadp.setDropDownViewResource(android.R.layout. simple_spinner_dropdown_item); spinner.setAdapter(arrayadp); spinner.setPrompt("信息："); //SpinnerOption.setSpinnerOptionValue(spinner,""); /* spinner.setOnItemSelectedListener(new OnItemSelectedListener() { public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { Toast.makeText(getApplicationContext(), position + "", 0) .show(); } public void onNothingSelected(AdapterView<?> parent) { Toast.makeText(getApplicationContext(), "ʲôҲûѡ", 0).show(); } });*/ } }

一个放新数组的类:

package luokan.commonui; import android.widget.Spinner; public class SpinnerOption { public String value; public SpinnerOption(String value) { this.value = value; } public static void setSpinnerOptionValue(Spinner spinner, Object value) { for (int i = 0, count = spinner.getCount(); i < count; i++) { SpinnerOption so = (SpinnerOption) spinner.getItemAtPosition(i); //if (so.value.equals(value)) { spinner.setSelection(i, true); return; // } } } @Override public String toString() { return value; } }

<Spinner
android:id="@+id/spinner"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:entries="@array/spinner_arrays"
>
</Spinner>

<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="hello">Hello World, MainActivity!</string>
<string name="app_name">常用Ui</string>
<string-array name="spinner_arrays">
<item>abc</item>
<item>edf</item>
<item>sss</item>
<item>eeee</item>
<item>fffffff</item>
<item>tttt</item>
</string-array>
</resources>

--------------------------------------------------------------spinner在dialog对话框内的使用，,,-----------在Activity消亡之前把dialog。dismiss掉；否则发生窗口泄漏异常。

import android.app.Activity; import android.app.AlertDialog; import android.app.Dialog; import android.content.DialogInterface; import android.os.Bundle; import android.util.Log; import android.view.KeyEvent; import android.view.View; import android.view.View.OnClickListener; import android.widget.AdapterView; import android.widget.Spinner; import android.widget.TextView; public class Activity03 extends Activity implements AdapterView.OnItemSelectedListener{ private final static int DIALOG_PAUSED_ID = 1; private TextView text,myTextView2; private View mView; AlertDialog alert; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.three); mView = getLayoutInflater().inflate(R.layout.spinner, null); Spinner spinner = ((Spinner) mView.findViewById(R.id.spinner)); // spinner.setSelection(1); spinner.setOnItemSelectedListener(this); findViewById(R.id.myButton03).setOnClickListener(new OnClickListener(){ public void onClick(View v) { // showDialog(DIALOG_PAUSED_ID); createDialog(); } }); text = (TextView) findViewById(R.id.myTextView03); myTextView2 = (TextView)mView.findViewById(R.id.myTextView2); } @Override protected Dialog onCreateDialog(int id) { if (id == DIALOG_PAUSED_ID) { // return createDialog(); } return null; } public void createDialog(){ Log.i("other", "come on"); AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setMessage("Are you sure you want to exit?") .setCancelable(false) .setView(mView) .setPositiveButton("Yes", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { // MyActivity.this.finish(); dialog.cancel(); } }) .setNegativeButton("No", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { dialog.cancel(); } }); alert = builder.create(); alert.show(); } public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { // myTextView2.setText(position); } public void onNothingSelected(AdapterView<?> parent) { // TODO Auto-generated method stub } /* @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if(keyCode == KeyEvent.KEYCODE_HOME){ Log.i("other", "alert dismiss..come on"); finish(); } return super.onKeyDown(keyCode, event); }*/ @Override protected void onPause() { Log.i("other", "alert dismiss..come on"); if (alert != null) { alert.dismiss(); alert = null; } super.onPause(); } }

mainifest.xml

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="mars.activity" android:versionCode="1" android:versionName="1.0"> <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:name=".Activity01" android:label="@string/app_name" android:taskAffinity="mars.activity.Activity01" android:clearTaskOnLaunch="true" android:launchMode="singleTop"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> <category android:name="android.intent.category.DEFAULT" /> </intent-filter> </activity> <activity android:name=".Activity02" android:clearTaskOnLaunch="true" android:label="@string/app_name" > </activity> <activity android:name=".Activity03" android:label="@string/app_name" android:configChanges="orientation|keyboardHidden" > </activity> </application> <uses-sdk android:minSdkVersion="5" /> </manifest>