Removed sample Activity stuff and made it into a bunch of static functions instead.

Author: trisapeace

AndroidManifest.xml

@@ -6,12 +6,5 @@
     <uses-sdk android:minSdkVersion="3" android:targetSdkVersion="11"/>
     <application android:label="@string/app_name"
                  android:debuggable="true">
-        <activity android:name="com.google.code.p.leveldb.LevelDB"
-                  android:label="@string/app_name">
-            <intent-filter>
-                <action android:name="android.intent.action.MAIN" />
-                <category android:name="android.intent.category.LAUNCHER" />
-            </intent-filter>
-        </activity>
     </application>
 </manifest> 

assets/sample.json

@@ -15,133 +15,7 @@
  */
 package com.google.code.p.leveldb;
 
-import java.io.BufferedReader;
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.util.ArrayList;
-import java.util.Iterator;
-import java.util.Random;
-
-import org.json.JSONException;
-import org.json.JSONObject;
-
-import android.app.Activity;
-import android.content.res.AssetManager;
-import android.widget.TextView;
-import android.widget.Toast;
-import android.os.Bundle;
-
-public class LevelDB extends Activity {
-	String mDBdir;
-
-	/** Called when the activity is first created. */
-	@Override
-	public void onCreate(Bundle savedInstanceState) {
-		super.onCreate(savedInstanceState);
-
-		/*
-		 * Use the files dir to store the database /data/data/package..../db
-		 */
-		mDBdir = this.getFilesDir().getAbsolutePath() + File.separator + "db";
-		new File(mDBdir).mkdirs();
-
-	}
-
-	@Override
-	protected void onResume() {
-		/*
-		 * Sample Database code: Open the database using the path to its
-		 * directory Insert some keys, Delete a key, Create a TextView and show
-		 * the value of a key retrieved from the DB.
-		 */
-		dbDestroy(mDBdir);
-		dbOpen(mDBdir);
-		dbPut("firstkey", "this is the value of the first key");
-		dbPut("secondkey", "this is the value of the first key");
-		dbPut("keyToDelete",
-				"this is the value of the key that i want to delete");
-		dbPut("fourthkey", "this is the value of the fourth key");
-		dbDelete("keyToDelete");
-
-		TextView tv = new TextView(this);
-		tv.setText(dbGet("fourthkey"));
-		setContentView(tv);
-
-		ArrayList<String> keystoquery = new ArrayList<String>();
-		try {
-			AssetManager assetManager = getAssets();
-			InputStream in = assetManager.open("sample.json");
-			BufferedReader sourcefile = new BufferedReader(
-					new InputStreamReader(in, "UTF-8"));
-			String contents = "";
-			String line = "";
-			while ((line = sourcefile.readLine()) != null) {
-				contents = contents + "\n" + line;
-			}
-			sourcefile.close();
-			JSONObject json = new JSONObject(contents);
-			Iterator<String> keys = json.keys();
-			while (keys.hasNext()) {
-				String key = (String) keys.next();
-				keystoquery.add(key);
-				dbPut(key, json.get(key).toString());
-			}
-
-			int j = json.length() - 1;
-			tv.setText("element" + j);
-			setContentView(tv);
-
-		} catch (IOException e) {
-			Toast.makeText(this, "File read problem" + e.getLocalizedMessage(),
-					Toast.LENGTH_LONG).show();
-			tv.setText("File read problem" + e.getLocalizedMessage());
-			setContentView(tv);
-		} catch (JSONException e) {
-			Toast.makeText(this, "Json problem" + e.getLocalizedMessage(),
-					Toast.LENGTH_LONG).show();
-			tv.setText("JSON problem" + e.getLocalizedMessage());
-			setContentView(tv);
-		}
-
-		/*
-		 * Query entries randomly
-		 */
-		long startime = System.currentTimeMillis();
-		int maxkey = keystoquery.size() - 1;
-		int querycount = 1000;
-		Random randomGenerator = new Random();
-		for (int k = 0; k < querycount; k++) {
-			int randomKey = randomGenerator.nextInt(maxkey);
-			String it = dbGet(keystoquery.get(randomKey));
-		}
-		long endtime = System.currentTimeMillis();
-		long querytime = (endtime - startime);
-		tv.setText("Random quering of " + querycount
-				+ " entries took this many miliseconds: " + querytime);
-		setContentView(tv);
-
-		super.onResume();
-	}
-
-	private String readInFile(String filePath) throws IOException {
-		File currentFile = new File(filePath);
-		BufferedReader sourcefile = new BufferedReader(new InputStreamReader(
-				new FileInputStream(currentFile), "UTF-8"));
-		String contents = "";
-		String line = "";
-
-		while ((line = sourcefile.readLine()) != null) {
-
-			contents = contents + "\n" + line;
-
-		}
-		sourcefile.close();
-		return contents;
-	}
-
+public class LevelDB {
 	/*
 	 * Methods which wrap LevelDB calls, see jni/main.cc for details
 	 */
@@ -184,13 +58,4 @@ private String readInFile(String filePath) throws IOException {
 	static {
 		System.loadLibrary("leveldb");
 	}
-
-	@Override
-	protected void onPause() {
-		super.onPause();
-		/*
-		 * Close the db in the onPause to not waste memory
-		 */
-		dbClose(mDBdir);
-	}
 }