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# re: 《Android/OPhone開發完全講義》連載（7)：使用SharedPreferences存取復雜數據[未登錄]  回復  更多評論   

PreferenceScreenExt 代碼：




package asai.cn.seekbardemo;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.SharedPreferences;
import android.preference.Preference;
import android.preference.PreferenceGroup;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import android.widget.AdapterView.OnItemClickListener;

public class PreferenceScreenExt extends PreferenceGroup implements
OnItemClickListener, DialogInterface.OnDismissListener {

private Dialog dialog;
private TextView title, summary;
private SharedPreferences share;
private RelativeLayout area;
private ListView listView;
List<Preference> list;

private List<HashMap<String, String>> listStr;
private CharSequence[] mEntries;
private String mValue;

public PreferenceScreenExt(Context context, AttributeSet attrs) {
this(context, attrs, android.R.attr.preferenceScreenStyle);
// TODO Auto-generated constructor stub
}

public PreferenceScreenExt(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, android.R.attr.preferenceScreenStyle);
// TODO Auto-generated constructor stub
int resouceId = attrs.getAttributeResourceValue(null, "Entries", 0);
if (resouceId > 0) {
mEntries = getContext().getResources().getTextArray(resouceId);
}
}

@Override
protected View onCreateView(ViewGroup parent) {
// TODO Auto-generated method stu
View view = LayoutInflater.from(getContext()).inflate(
R.layout.preference_screen, null);
area = (RelativeLayout) view.findViewById(R.id.area);
share = getPreferenceManager().getSharedPreferences();
title = (TextView) view.findViewById(R.id.title);
summary = (TextView) view.findViewById(R.id.summary);
title.setText(getTitle());
summary.setText(share.getString(getKey(), getSummary() == null ? ""
: getSummary().toString()));
area.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
showDialog();
}
});
return view;
}

public void bindView(ListView listview) {
int length = mEntries.length;
int i = 0;
listStr = new ArrayList<HashMap<String, String>>();
for (i = 0; i < length; i++) {
HashMap<String, String> map = new HashMap<String, String>();
map.put("keyname", mEntries[i].toString());
listStr.add(map);
}
SimpleAdapter simple = new SimpleAdapter(getContext(), listStr,
R.layout.dialog_view, new String[] { "keyname" },
new int[] { R.id.text });
listview.setAdapter(simple);
listview.setOnItemClickListener(this);
}

public void showDialog() {
listView = new ListView(getContext());
bindView(listView);
dialog = new Dialog(getContext(), android.R.style.Theme_NoTitleBar);
dialog.setContentView(listView);
dialog.setOnDismissListener(this);
dialog.show();
}

@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
// TODO Auto-generated method stub
mValue = listStr.get(position).get("keyname").toString();
SharedPreferences.Editor editor = getEditor();
editor.putString(getKey(), mValue);
editor.commit();
dialog.dismiss();
}

@Override
public void onDismiss(DialogInterface dialog) {
// TODO Auto-generated method stub
summary.setText(mValue);
}
}

# re: 《Android/OPhone開發完全講義》連載（7)：使用SharedPreferences存取復雜數據[未登錄]  回復  更多評論   

對應的XML


preference_screen.xml

<RelativeLayout android:id="@+id/area" android:gravity="center_vertical"
android:layout_marginTop="5px" android:clickable="true"
xmlns:android="http://schemas.android.com/apk/res/android"
android:background="@drawable/row_bg" android:layout_width="fill_parent"
android:layout_height="wrap_content">

<TextView android:id="@+id/title" android:layout_marginLeft="20dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textSize="35sp" android:layout_width="wrap_content"
android:layout_height="wrap_content">
</TextView>
<TextView android:id="@+id/summary"
android:layout_marginRight="20dp" android:textSize="35sp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:layout_alignParentRight="true" android:layout_width="wrap_content"
android:layout_height="wrap_content">
</TextView>
</RelativeLayout>

# re: 《Android/OPhone開發完全講義》連載（7)：使用SharedPreferences存取復雜數據[未登錄]  回復  更多評論   

dialog_view.xml


<LinearLayout android:layout_width="fill_parent"
android:background="@drawable/row_bg" xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:gravity="center"
android:layout_height="fill_parent">


<TextView android:id="@+id/text" android:layout_marginLeft="20dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textSize="35sp" android:layout_width="wrap_content"
android:layout_height="wrap_content">
</TextView>


</LinearLayout>

# re: 《Android/OPhone開發完全講義》連載（7)：使用SharedPreferences存取復雜數據[未登錄]  回復  更多評論   

隨便測試的ActivityGroup:


package asai.cn.seekbardemo;

import android.app.ActivityGroup;
import android.app.LocalActivityManager;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.Window;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.LinearLayout;

public class main extends ActivityGroup implements OnClickListener {

private LocalActivityManager lm;
private LinearLayout layout;
private Button btn, btn2;

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.group);
lm = getLocalActivityManager();

layout = (LinearLayout) findViewById(R.id.layout);
btn = (Button) findViewById(R.id.Button01);
btn2 = (Button) findViewById(R.id.Button02);

btn.setOnClickListener(this);
btn2.setOnClickListener(this);
Intent intent = new Intent(this, seekBarDemo.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
Window w = lm.startActivity("test", intent);
View v = w.getDecorView();
layout.removeAllViews();
layout.addView(v);
layout.invalidate();

}

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.Button01:
Intent intent = new Intent(this, seekBarDemo.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
Window w = lm.startActivity("test", intent);
View view = w.getDecorView();
layout.removeAllViews();
layout.addView(view);
break;
case R.id.Button02:
Intent in = new Intent(this, test.class);
in.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
Window win = lm.startActivity("ww", in);
View vw = win.getDecorView();
layout.removeAllViews();
layout.addView(vw);
break;
default:
break;
}
}
}

# re: 《Android/OPhone開發完全講義》連載（7)：使用SharedPreferences存取復雜數據[未登錄]  回復  更多評論   

還少了個XML配置：
<asai.cn.seekbardemo.PreferenceScreenExt
Entries="@array/country" android:title="收音區域" android:summary="美國"
android:key="eeg">
</asai.cn.seekbardemo.PreferenceScreenExt>


數組：
<string-array name="country">
<item>美國</item>
<item>中國</item>
<item>英國</item>
</string-array>