相対レイアウトに配置したカスタマイズされたリストビューがあり、その周りにいくつかのボタンとラベルがあり、このレイアウトはtable_layout.xmlファイルに保存され、リストビューの各行には3つのテキストビューと1つのチェックボックスがあります。テキストボックスには、実行時にデータベースから抽出されたデータが入力され、このレイアウトをcell.xmlという別のxmlファイルに記述しましたが、アプリケーションを実行すると、table_layout.xmlのボタンとテキストビューが互いに重なります。リストビュー。しかし、行が追加されるとリストビューがスクロールします。理由が見つかりませんでした。解決策を提案していただければ幸いです。
これがtable_layout.xmlです
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#000000"
>
<TextView
android:id="@+id/GOODNAME_CELL"
android:layout_width="180dp"
android:layout_height="wrap_content"
android:background="@drawable/border"
android:textSize="18dp"
android:text="Order"
android:paddingLeft="5dp"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
/>
<TextView
android:id="@+id/GOODUNITPRICE_CELL"
android:layout_width="180dp"
android:layout_height="wrap_content"
android:background="@drawable/border"
android:textSize="18dp"
android:text="Unit Price"
android:paddingLeft="5dp"
android:layout_alignParentTop="true"
android:layout_toRightOf="@id/GOODNAME_CELL"
/>
<TextView
android:id="@+id/QUANTITYCELL"
android:layout_width="120dp"
android:layout_height="wrap_content"
android:background="@drawable/border"
android:textSize="18dp"
android:text="Quantity"
android:paddingLeft="5dp"
android:layout_alignParentTop="true"
android:layout_toRightOf="@id/GOODUNITPRICE_CELL"
/>
<ListView
android:id="@android:id/list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
style="@style/CodeFont"
android:layout_alignParentLeft="true"
android:layout_below="@id/GOODUNITPRICE_CELL"
>
</ListView>
<TextView
android:id="@+id/TotalPriceTextview"
android:layout_width="600dp"
android:layout_height="wrap_content"
android:text=""
android:layout_below="@android:id/list"
android:layout_centerHorizontal="true"
android:background="@drawable/back"
android:textColor="#FFFFFF"
android:textSize="20dp"
/>
<Button
android:id="@+id/DeleteSelectedGoodsButton"
android:layout_width="150dp"
android:layout_height="45dp"
android:text="@string/DeleteSelectedGoods"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
/>
<Button
android:id="@+id/ConfirmDelete"
android:layout_width="150dp"
android:layout_height="45dp"
android:text="@string/ConfirmDeleteButton"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
/>
<Button
android:id="@+id/CancelButton"
android:layout_width="150dp"
android:layout_height="45dp"
android:text="@string/CancelButton"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
/>
</RelativeLayout>
これがcell.xmlです
<?xml version="1.0" encoding="utf-8" ?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:paddingTop="4dip"
android:paddingBottom="6dip"
android:orientation="horizontal"
android:background="#000000"
android:layout_marginRight="5dp"
>
<TextView
android:id="@+id/GOOD_NAME_CELL"
android:layout_width="110dp"
android:layout_height="55dp"
android:layout_weight="1"
android:textSize="18dp"
android:textColor="#FFFFFF"
android:paddingLeft="5dp"
/>
<TextView
android:id="@+id/GOOD_UNITPRICE_CELL"
android:layout_width="110dp"
android:layout_height="55dp"
android:layout_weight="1"
android:textSize="18dp"
android:textColor="#FFFFFF"
android:paddingLeft="5dp"
/>
<TextView
android:id="@+id/QUANTITY_CELL"
android:layout_width="80dp"
android:layout_height="55dp"
android:layout_weight="1"
android:textSize="18dp"
android:paddingLeft="5dp"
android:textColor="#FFFFFF"
/>
<CheckBox
android:layout_width="40dp"
android:layout_height="40dp"
android:id="@+id/ChkOrder"
android:layout_marginRight="15dp"
android:clickable="true"
android:focusable="false"
/>
</LinearLayout>
そしてここにスクリーンショットがあります:
Code.java:
package com.example.nfc;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
import com.example.nfc.ExternalDbOpenHelper;
import android.R.integer;
import android.R.string;
import android.app.AlertDialog;
import android.app.ListActivity;
import android.content.Intent;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.support.v4.widget.SimpleCursorAdapter;
import android.util.SparseBooleanArray;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.LinearLayout;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import android.widget.Toast;
public class PrepopSqliteDbActivity extends ListActivity {
private static final String DB_NAME = "NFC.sqlite";
//------------------------------------------------------------
private static final String TABLE_NAME = "Tbl_Goods";
private static final String GOOD_ID = "Good_ID";
private static final String CART_ID = "Cart_ID";
private static final String GOOD_NAME = "Good_Name";
private static final String GOOD_UNITPRICE = "Good_UnitPrice";
private static final String QUANTITY = "Quantity";
Cursor goodsCursor;
private SQLiteDatabase database;
private ListView listView;
int checkedItemPosition;
ArrayList<HashMap<String, String>> goods=new ArrayList<HashMap<String,String>>();
HashMap<String, String> map;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.table_layout);
//-------------------------------------------------------
ExternalDbOpenHelper dbOpenHelper = new ExternalDbOpenHelper(this, DB_NAME);
database = dbOpenHelper.openDataBase();
//--------------------------------------
fillgoods();
ShowTotalPrice() ;
setUpList();
//////Delete Button
Button DeleteGoods=(Button)findViewById(R.id.DeleteSelectedGoodsButton);
DeleteGoods.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
/** Getting the position of the currently selected item**/
DeleteCheckedItem(checkedItemPosition);
Toast.makeText(getApplicationContext(),"The selected order has been deleted successfully.", Toast.LENGTH_SHORT).show();
finish();
startActivity(getIntent());
}
});
///Confirm Button
Button btnConfirm=(Button)findViewById(R.id.ConfirmDelete);
btnConfirm.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
//ShowTotalPrice();
}
});
///Cancel Button
Button btnCancel=(Button)findViewById(R.id.CancelButton);
btnCancel.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
finish();
}
});
//ListView OnItemClickListener
listView.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
CheckBox cbx = (CheckBox)view.findViewById(R.id.ChkOrder);
int firstPosition = listView.getFirstVisiblePosition();
for(int i=firstPosition;i<listView.getCount();i++){
View v=listView.getChildAt(i);
cbx = (CheckBox)v.findViewById(R.id.ChkOrder);
if(cbx.isChecked()){
Toast.makeText(getApplicationContext(),
"Checked position " + goods.get(i),
Toast.LENGTH_SHORT).show();
checkedItemPosition=i;
}
}
}
});
}
private void setUpList() {
setListAdapter(new SimpleAdapter(this, goods, R.layout.cells,
new String[]{GOOD_NAME,GOOD_UNITPRICE,QUANTITY},
new int[]{R.id.GOOD_NAME_CELL,R.id.GOOD_UNITPRICE_CELL,
R.id.QUANTITY_CELL}));
//---------------------------------layout------------------------------------
listView = getListView();
listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
///////////////////////
View footer = LayoutInflater.from(this).inflate(
R.layout.footer, null);
listView.addFooterView(footer);
///////////////////////////////////////
}
private void DeleteCheckedItem(int chkPosition)
{
String strName=goods.get(chkPosition).get(GOOD_NAME);
String strPrice=goods.get(chkPosition).get(GOOD_UNITPRICE);
String strQuantity=goods.get(chkPosition).get(QUANTITY);
String whereClause = "GOOD_NAME = ? AND GOOD_UNITPRICE= ? AND QUANTITY= ?";
String[] whereArgs = {strName,strPrice,strQuantity};
database.delete(TABLE_NAME, whereClause, whereArgs);
fillgoods();
}
//--------------------------------------------------------------------
private void fillgoods() {
goods = new ArrayList<HashMap<String, String>>();
Cursor goodsCursor = database.query(TABLE_NAME,
new String[]
{GOOD_ID,CART_ID,GOOD_NAME,GOOD_UNITPRICE,QUANTITY},
null, null, null, null
, GOOD_NAME);
String[] goodsTable=new String[]
{GOOD_NAME,GOOD_UNITPRICE,QUANTITY};
goodsCursor.moveToFirst();
String[] names=new String[1000];
if(!goodsCursor.isAfterLast()) {
do {
int i=0;
names[i] = goodsCursor.getString(2);
names[i+1]=goodsCursor.getString(3);
names[i+2]=goodsCursor.getString(4);
map=new HashMap<String, String>();
map.put(goodsTable[i],names[i]);
map.put(goodsTable[i+1], names[i+1]);
map.put(goodsTable[i+2], names[i+2]);
goods.add(map);
} while (goodsCursor.moveToNext());
}
goodsCursor.close();
}
/////////////////////////////////////////////////////
//////////////Home And Back Button
@Override
public void onAttachedToWindow() {
this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD);
super.onAttachedToWindow();
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if(keyCode == KeyEvent.KEYCODE_HOME)
BackToMainIntent();
else if(keyCode==KeyEvent.KEYCODE_BACK)
{
BackToMainIntent();
}
return false;
}
public void BackToMainIntent()
{
Intent intent = new Intent(this, Main.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
}
}
Logcat:
02-16 11:26:51.171: E/AndroidRuntime(222): Uncaught handler: thread main exiting due to uncaught exception
02-16 11:26:51.182: E/AndroidRuntime(222): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.nfc/com.example.nfc.PrepopSqliteDbActivity}: java.lang.NullPointerException
02-16 11:26:51.182: E/AndroidRuntime(222): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2496)
02-16 11:26:51.182: E/AndroidRuntime(222): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)
02-16 11:26:51.182: E/AndroidRuntime(222): at android.app.ActivityThread.access$2200(ActivityThread.java:119)
02-16 11:26:51.182: E/AndroidRuntime(222): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863)
02-16 11:26:51.182: E/AndroidRuntime(222): at android.os.Handler.dispatchMessage(Handler.java:99)
02-16 11:26:51.182: E/AndroidRuntime(222): at android.os.Looper.loop(Looper.java:123)
02-16 11:26:51.182: E/AndroidRuntime(222): at android.app.ActivityThread.main(ActivityThread.java:4363)
02-16 11:26:51.182: E/AndroidRuntime(222): at java.lang.reflect.Method.invokeNative(Native Method)
02-16 11:26:51.182: E/AndroidRuntime(222): at java.lang.reflect.Method.invoke(Method.java:521)
02-16 11:26:51.182: E/AndroidRuntime(222): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
02-16 11:26:51.182: E/AndroidRuntime(222): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
02-16 11:26:51.182: E/AndroidRuntime(222): at dalvik.system.NativeStart.main(Native Method)
02-16 11:26:51.182: E/AndroidRuntime(222): Caused by: java.lang.NullPointerException
02-16 11:26:51.182: E/AndroidRuntime(222): at com.example.nfc.PrepopSqliteDbActivity.ShowTotalPrice(PrepopSqliteDbActivity.java:164)
02-16 11:26:51.182: E/AndroidRuntime(222): at com.example.nfc.PrepopSqliteDbActivity.onCreate(PrepopSqliteDbActivity.java:79)
02-16 11:26:51.182: E/AndroidRuntime(222): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
02-16 11:26:51.182: E/AndroidRuntime(222): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2459)
02-16 11:26:51.182: E/AndroidRuntime(222): ... 11 more
02-16 11:26:51.192: I/Process(51): Sending signal. PID: 222 SIG: 3
02-16 11:26:51.192: I/dalvikvm(222): threadid=7: reacting to signal 3
02-16 11:26:51.202: E/dalvikvm(222): Unable to open stack trace file '/data/anr/traces.txt': Permission denied
02-16 11:26:51.373: I/ARMAssembler(51): generated scanline__00000077:03515104_00000000_00000000 [ 33 ipp] (47 ins) at [0x4e2f38:0x4e2ff4] in 383010 ns
前もって感謝します