-1
Я создал простое приложение, которое сохраняет и отображает закладки.
Активность активности закладок вызывается нажатием на пункт меню в основном действии.Ошибка: неиспользуемый оператор импорта - import android.widget.AdapterView.OnItemClickListener; & import android.content.Context;
Проблема заключается в том, что когда я нажимаю на эту кнопку, чтобы просматривать закладки, хранящиеся во вкладках Закладки, мое приложение падает.
Проблема, я думаю, с закладкой Activity, потому что у меня есть неиспользованный оператор импорта AdapterView.OnItemClickListener & content.Context.
Как решить эту проблему?
PS: когда я нажимаю кнопку в главном Управлении, чтобы сохранить закладку, запустив закладку сохранения, она работает отлично.
Вот мой код:
BookmarkPage.class
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import java.util.ArrayList;
public class BookmarkPage extends Activity {
public final static String EXTRA_MESSAGE = "MESSAGE";
private ListView obj;
DBHelper mydb;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.bookmark_page);
mydb = new DBHelper(this);
ArrayList array_list = mydb.getAllBookmarks();
ArrayAdapter arrayAdapter=new ArrayAdapter(this,android.R.layout.simple_list_item_1, array_list);
obj = (ListView)findViewById(R.id.listView1);
obj.setAdapter(arrayAdapter);
obj.setOnItemClickListener(new AdapterView.OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,long arg3) {
// TODO Auto-generated method stub
int id_To_Search = arg2 + 1;
Bundle dataBundle = new Bundle();
dataBundle.putInt("id", id_To_Search);
Intent intent = new Intent(getApplicationContext(),DisplayBookmarks.class);
intent.putExtras(dataBundle);
startActivity(intent);
}
});
}
public boolean onKeyDown(int keycode, KeyEvent event) {
if (keycode == KeyEvent.KEYCODE_BACK) {
moveTaskToBack(true);
}
return super.onKeyDown(keycode, event);
}
}
bookmark_page.xml
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".BookmarkPage">
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:text="Bookmarks"
android:textSize="30sp" />
<ListView
android:id="@+id/listView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/textView">
</ListView>
</RelativeLayout>
Logcat:
OpenGL ES Shader Compiler Version: E031.25.03.00
Build Date: 12/04/14 Thu
Local Branch:
Remote Branch: quic/LA.BF.1.1_rb1.14
Local Patches: NONE
Reconstruct Branch: AU_LINUX_ANDROID_LA.BF.1.1_RB1.05.00.00.002.030 + NOTHING
10-03 18:10:35.793 18581-18642/com.carsaleindiaofficial.csitestapp W/cr.media﹕ Requires BLUETOOTH permission
10-03 18:10:35.830 18581-18581/com.carsaleindiaofficial.csitestapp E/libEGL﹕ validate_display:255 error 3008 (EGL_BAD_DISPLAY)
10-03 18:10:35.890 18581-18581/com.carsaleindiaofficial.csitestapp I/art﹕ Rejecting re-init on previously-failed class java.lang.Class<com.android.webview.chromium.FloatingSelectActionModeCallback>
10-03 18:10:35.891 18581-18581/com.carsaleindiaofficial.csitestapp I/art﹕ Rejecting re-init on previously-failed class java.lang.Class<com.android.webview.chromium.FloatingSelectActionModeCallback>
10-03 18:10:35.922 18581-18581/com.carsaleindiaofficial.csitestapp I/art﹕ Rejecting re-init on previously-failed class java.lang.Class<com.android.webview.chromium.WebViewContentsClientAdapter$WebResourceErrorImpl>
10-03 18:10:35.922 18581-18581/com.carsaleindiaofficial.csitestapp I/art﹕ Rejecting re-init on previously-failed class java.lang.Class<com.android.webview.chromium.WebViewContentsClientAdapter$WebResourceErrorImpl>
10-03 18:10:36.276 18581-18581/com.carsaleindiaofficial.csitestapp W/art﹕ Attempt to remove local handle scope entry from IRT, ignoring
10-03 18:10:36.318 18581-18581/com.carsaleindiaofficial.csitestapp W/AwContents﹕ onDetachedFromWindow called when already detached. Ignoring
10-03 18:10:36.836 18581-18681/com.carsaleindiaofficial.csitestapp D/OpenGLRenderer﹕ Render dirty regions requested: true
10-03 18:10:36.902 18581-18581/com.carsaleindiaofficial.csitestapp D/Atlas﹕ Validating map...
10-03 18:10:36.944 18581-18639/com.carsaleindiaofficial.csitestapp W/chromium﹕ [WARNING:data_reduction_proxy_config.cc(630)] SPDY proxy OFF at startup
10-03 18:10:37.192 18581-18681/com.carsaleindiaofficial.csitestapp I/OpenGLRenderer﹕ Initialized EGL, version 1.4
10-03 18:10:37.201 18581-18681/com.carsaleindiaofficial.csitestapp D/OpenGLRenderer﹕ Enabling debug mode 0
10-03 18:10:38.109 18581-18581/com.carsaleindiaofficial.csitestapp I/Choreographer﹕ Skipped 49 frames! The application may be doing too much work on its main thread.
10-03 18:10:38.213 18581-18581/com.carsaleindiaofficial.csitestapp I/progressBar﹕ Visible
10-03 18:10:38.222 18581-18596/com.carsaleindiaofficial.csitestapp I/art﹕ Background sticky concurrent mark sweep GC freed 10653(792KB) AllocSpace objects, 6(92KB) LOS objects, 12% free, 6MB/7MB, paused 1.507ms total 130.800ms
10-03 18:10:38.894 18581-18581/com.carsaleindiaofficial.csitestapp W/cr.BindingManager﹕ Cannot call determinedVisibility() - never saw a connection for the pid: 18581
10-03 18:10:41.925 18581-18596/com.carsaleindiaofficial.csitestapp I/art﹕ Background partial concurrent mark sweep GC freed 12880(607KB) AllocSpace objects, 1(39KB) LOS objects, 40% free, 7MB/11MB, paused 1.053ms total 158.419ms
10-03 18:10:42.812 18581-18581/com.carsaleindiaofficial.csitestapp W/cr.BindingManager﹕ Cannot call determinedVisibility() - never saw a connection for the pid: 18581
10-03 18:10:43.549 18581-18581/com.carsaleindiaofficial.csitestapp W/cr.BindingManager﹕ Cannot call determinedVisibility() - never saw a connection for the pid: 18581
Проблема начинается после того, как ProgressBar: Ушли (т.е. когда я ESS вид сохранен вариант закладки)
10-03 21:13:12.096 18489-18489/com.carsaleindiaofficial.csitestapp I/pageFinished﹕ yesss
10-03 21:13:12.353 18489-18489/com.carsaleindiaofficial.csitestapp I/progressBar﹕ Gone
10-03 21:13:26.413 18489-18489/com.carsaleindiaofficial.csitestapp I/Choreographer﹕ Skipped 64 frames! The application may be doing too much work on its main thread.
10-03 21:13:28.701 18489-18489/com.carsaleindiaofficial.csitestapp W/art﹕ Before Android 4.1, method int android.support.v7.internal.widget.ListViewCompat.lookForSelectablePosition(int, boolean) would have incorrectly overridden the package-private method in android.widget.ListView
10-03 21:13:30.289 18489-18489/com.carsaleindiaofficial.csitestapp I/Choreographer﹕ Skipped 129 frames! The application may be doing too much work on its main thread.
10-03 21:13:31.604 18489-18489/com.carsaleindiaofficial.csitestapp I/Choreographer﹕ Skipped 78 frames! The application may be doing too much work on its main thread.
10-03 21:13:33.328 18489-18489/com.carsaleindiaofficial.csitestapp I/Choreographer﹕ Skipped 80 frames! The application may be doing too much work on its main thread.
10-03 21:13:35.714 18489-18489/com.carsaleindiaofficial.csitestapp I/Choreographer﹕ Skipped 38 frames! The application may be doing too much work on its main thread.
10-03 21:13:36.532 18489-18489/com.carsaleindiaofficial.csitestapp I/Choreographer﹕ Skipped 44 frames! The application may be doing too much work on its main thread.
10-03 21:13:37.719 18489-18489/com.carsaleindiaofficial.csitestapp E/CursorWindow﹕ Failed to read row 0, column -1 from a CursorWindow which has 9 rows, 2 columns.
10-03 21:13:37.777 18489-18489/com.carsaleindiaofficial.csitestapp D/AndroidRuntime﹕ Shutting down VM
10-03 21:13:37.892 18489-18489/com.carsaleindiaofficial.csitestapp E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.carsaleindiaofficial.csitestapp, PID: 18489
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.carsaleindiaofficial.csitestapp/com.carsaleindiaofficial.csitestapp.BookmarkPage}: java.lang.IllegalStateException: Couldn't read row 0, col -1 from CursorWindow. Make sure the Cursor is initialized correctly before accessing data from it.
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2314)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2388)
at android.app.ActivityThread.access$800(ActivityThread.java:148)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1292)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5312)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:901)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:696)
Caused by: java.lang.IllegalStateException: Couldn't read row 0, col -1 from CursorWindow. Make sure the Cursor is initialized correctly before accessing data from it.
at android.database.CursorWindow.nativeGetString(Native Method)
at android.database.CursorWindow.getString(CursorWindow.java:438)
at android.database.AbstractWindowedCursor.getString(AbstractWindowedCursor.java:51)
at com.carsaleindiaofficial.csitestapp.DBHelper.getAllBookmarks(DBHelper.java:90)
at com.carsaleindiaofficial.csitestapp.BookmarkPage.onCreate(BookmarkPage.java:32)
at android.app.Activity.performCreate(Activity.java:5953)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1128)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2267)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2388)
at android.app.ActivityThread.access$800(ActivityThread.java:148)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1292)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5312)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:901)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:696)
10-03 21:13:43.601 18489-18489/com.carsaleindiaofficial.csitestapp I/Process﹕ Sending signal. PID: 18489 SIG: 9
Моя база данных: DBHelper.class
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Hashtable;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.DatabaseUtils;
import android.database.sqlite.SQLiteOpenHelper;
import android.database.sqlite.SQLiteDatabase;
public class DBHelper extends SQLiteOpenHelper {
public static final String DATABASE_NAME = "MyDBName.db";
public static final String BOOKMARKS_TABLE_NAME = "bookmarks";
public static final String BOOKMARKS_COLUMN_ID = "id";
public static final String BOOKMARKS_COLUMN_NAME = "bmtitle";
private HashMap hp;
public DBHelper(Context context)
{
super(context, DATABASE_NAME , null, 1);
}
@Override
public void onCreate(SQLiteDatabase db) {
// TODO Auto-generated method stub
db.execSQL(
"create table bookmarks " +
"(id integer primary key, bmtitle text)"
);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// TODO Auto-generated method stub
db.execSQL("DROP TABLE IF EXISTS bookmarks");
onCreate(db);
}
public boolean insertBookmark (String title)
{
SQLiteDatabase db = this.getWritableDatabase();
ContentValues contentValues = new ContentValues();
contentValues.put("dbtitle", title);
db.insert("bookmarks", null, contentValues);
return true;
}
public Cursor getData(int id){
SQLiteDatabase db = this.getReadableDatabase();
Cursor res = db.rawQuery("select * from bookmarks where id="+id+"", null);
return res;
}
public int numberOfRows(){
SQLiteDatabase db = this.getReadableDatabase();
int numRows = (int) DatabaseUtils.queryNumEntries(db, BOOKMARKS_TABLE_NAME);
return numRows;
}
public boolean updateBookmark (Integer id, String title)
{
SQLiteDatabase db = this.getWritableDatabase();
ContentValues contentValues = new ContentValues();
contentValues.put("name", title);
db.update("bookmarks", contentValues, "id = ? ", new String[] { Integer.toString(id) });
return true;
}
public Integer deleteBookmark (Integer id)
{
SQLiteDatabase db = this.getWritableDatabase();
return db.delete("bookmarks",
"id = ? ",
new String[] { Integer.toString(id) });
}
public ArrayList<String> getAllBookmarks()
{
ArrayList<String> array_list = new ArrayList<String>();
//hp = new HashMap();
SQLiteDatabase db = this.getReadableDatabase();
Cursor res = db.rawQuery("select * from bookmarks", null);
res.moveToFirst();
while(res.isAfterLast() == false){
array_list.add(res.getString(res.getColumnIndex(BOOKMARKS_COLUMN_NAME)));
res.moveToNext();
}
return array_list;
}
}
MainActivity.class
import android.annotation.SuppressLint;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.ImageView;
import android.widget.ProgressBar;
@SuppressLint("SetJavaScriptEnabled")
public class MainActivity extends AppCompatActivity {
private WebView view;
ProgressBar progressBar;
ImageView im;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getSupportActionBar().setDisplayShowHomeEnabled(true);
getSupportActionBar().setLogo(R.drawable.ic_launcher);
getSupportActionBar().setDisplayUseLogoEnabled(true);
setContentView(R.layout.activity_main);
progressBar = (ProgressBar) this.findViewById(R.id.progressBar1);
im = (ImageView) this.findViewById(R.id.imageView2);
String url = "http://www.carsaleindiaofficial.com/?m=1";
view = (WebView) this.findViewById(R.id.webView);
view.setWebViewClient(new MyWebViewClient());
view.getSettings().setJavaScriptEnabled(true);
view.getSettings().setDomStorageEnabled(true);
view.loadUrl(url);
}
public class MyWebViewClient extends WebViewClient {
@Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
Log.i("pageFinished", "yesss");
progressBar.setVisibility(View.GONE);
im.setVisibility(View.GONE);
Log.i("progressBar", "Gone");
}
@Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
progressBar.setVisibility(View.VISIBLE);
Log.i("progressBar", "Visible");
super.onPageStarted(view, url, favicon);
}
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if(Uri.parse(url).getHost().endsWith("carsaleindiaofficial.com")) {
Log.i("ShldOvrideUrl", "CSI");
return false;
}
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
view.getContext().startActivity(intent);
Log.i("ShldOvrideUrl", "OtherSite");
return true;
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item){
super.onOptionsItemSelected(item);
switch(item.getItemId())
{
case R.id.add_bookmark:
Bundle dataBundle = new Bundle();
dataBundle.putInt("id", 0);
Log.i("addBookmark", "loadingAddBookmark");
Intent intent = new Intent(getApplicationContext(),DisplayBookmarks.class);
intent.putExtras(dataBundle);
startActivity(intent);
return true;
case R.id.show_bookmark:
Log.i("showBookmark", "loadingShowBookmark");
Intent intent2 = new Intent(getApplicationContext(),BookmarkPage.class);
startActivity(intent2);
return true;
case R.id.action_reload:
Log.i("actionReload", "ReloadingURL");
view.loadUrl(view.getUrl());
default:
return super.onOptionsItemSelected(item);
}
}
@Override
public void onBackPressed() {
if (view.canGoBack()) {
view.goBack();
} else {
super.onBackPressed();
}
}
}
Пожалуйста, оставляйте Ваш полный LogCat –
неиспользуемые импорта не может привести к аварии. отправьте свой логарифм. –
@Frank и Rahul, я обновил свой вопрос. Но все же я четко использовал оба импортированных метода, и почему он показывает, что импортированные методы не используются. – FalconHawk