Java tutorial
/* ** Copyright 2007, The Android Open Source Project ** ** Licensed under the Apache License, Version 2.0 (the "License"); ** you may not use this file except in compliance with the License. ** You may obtain a copy of the License at ** ** http://www.apache.org/licenses/LICENSE-2.0 ** ** Unless required by applicable law or agreed to in writing, software ** distributed under the License is distributed on an "AS IS" BASIS, ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. ** See the License for the specific language governing permissions and ** limitations under the License. */ package com.android.development; import android.app.ListActivity; import android.content.Context; import android.content.Intent; import android.database.Cursor; import android.database.ContentObserver; import android.database.DataSetObserver; import android.graphics.Typeface; import android.os.RemoteException; import android.os.ServiceManager; import android.provider.Checkin; import android.server.data.CrashData; import android.server.data.ThrowableData; import android.os.Bundle; import android.util.Log; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.view.KeyEvent; import android.widget.*; import org.apache.commons.codec.binary.Base64; import java.io.ByteArrayInputStream; import java.io.DataInputStream; import java.io.IOException; /** * * */ public class ExceptionBrowser extends ListActivity { /** Logging identifier. */ private static final String TAG = "ExceptionBrowser"; @Override protected void onCreate(Bundle icicle) { super.onCreate(icicle); Cursor cursor = getContentResolver().query(Checkin.Crashes.CONTENT_URI, new String[] { Checkin.Crashes._ID, Checkin.Crashes.DATA }, null, null, null); if (cursor != null) { startManagingCursor(cursor); setListAdapter(new CursorAdapter(this, cursor, true) { public View newView(Context context, Cursor c, ViewGroup v) { return new CrashListItem(context); } public void bindView(View view, Context c, Cursor cursor) { CrashListItem item = (CrashListItem) view; try { String data = cursor.getString(1); CrashData crash = new CrashData(new DataInputStream( new ByteArrayInputStream(Base64.decodeBase64(data.getBytes())))); ThrowableData exc = crash.getThrowableData(); item.setText(exc.getType() + ": " + exc.getMessage()); item.setCrashData(crash); } catch (IOException e) { item.setText("Invalid crash: " + e); Log.e(TAG, "Invalid crash", e); } } }); } else { // No database, no exceptions, empty list. setListAdapter(new BaseAdapter() { public int getCount() { return 0; } public Object getItem(int position) { throw new AssertionError(); } public long getItemId(int position) { throw new AssertionError(); } public View getView(int position, View convertView, ViewGroup parent) { throw new AssertionError(); } }); } } private static final int UPLOAD_ID = Menu.FIRST; private static final int CLEAR_ID = Menu.FIRST + 1; public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); menu.add(0, UPLOAD_ID, 0, R.string.menu_upload_exceptions); menu.add(0, CLEAR_ID, 0, R.string.menu_clear_exceptions); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle all of the possible menu actions. switch (item.getItemId()) { case UPLOAD_ID: sendBroadcast(new Intent(Checkin.TriggerIntent.ACTION)); break; case CLEAR_ID: getContentResolver().delete(Checkin.Crashes.CONTENT_URI, null, null); break; } return super.onOptionsItemSelected(item); } static class CrashListItem extends TextView { CrashData crashData = null; public CrashListItem(Context context) { super(context); setTextSize(10); setTypeface(Typeface.MONOSPACE); } public CrashData getCrashData() { return crashData; } public void setCrashData(CrashData crashData) { this.crashData = crashData; } } @Override protected void onListItemClick(ListView l, View view, int pos, long id) { // TODO: Use a generic VIEW action on the crash's content URI. CrashData crash = ((CrashListItem) view).getCrashData(); if (crash != null) { Intent intent = new Intent(); intent.setClass(this, StacktraceViewer.class); intent.putExtra(CrashData.class.getName(), crash.getThrowableData().toString()); startActivity(intent); } } }