/*  * Copyright (C) 2007 Google Inc. * * 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.example.android.notepad;import com.example.android.notepad.NotePad.Notes;import android.app.Activity;import android.content.ContentValues;import android.database.Cursor;import android.net.Uri;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.EditText;/** * An activity that will edit the title of a note. Displays a floating * window with a text field. */public class TitleEditor extends Activity implements View.OnClickListener {    /**     * This is a special intent action that means "edit the title of a note".     */    public static final String EDIT_TITLE_ACTION = "com.android.notepad.action.EDIT_TITLE";    /**     * An array of the columns we are interested in.     */    private static final String[] PROJECTION = new String[] {            NotePad.Notes._ID, // 0            NotePad.Notes.TITLE, // 1    };    /** Index of the title column */    private static final int COLUMN_INDEX_TITLE = 1;    /**     * Cursor which will provide access to the note whose title we are editing.     */    private Cursor mCursor;    /**     * The EditText field from our UI. Keep track of this so we can extract the     * text when we are finished.     */    private EditText mText;    /**     * The content URI to the note that's being edited.     */    private Uri mUri;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.title_editor);        // Get the uri of the note whose title we want to edit        mUri = getIntent().getData();        // Get a cursor to access the note        mCursor = managedQuery(mUri, PROJECTION, null, null, null);        // Set up click handlers for the text field and button        mText = (EditText) this.findViewById(R.id.title);        mText.setOnClickListener(this);                Button b = (Button) findViewById(R.id.ok);        b.setOnClickListener(this);    }    @Override    protected void onResume() {        super.onResume();        // Initialize the text with the title column from the cursor        if (mCursor != null) {            mCursor.moveToFirst();            mText.setText(mCursor.getString(COLUMN_INDEX_TITLE));        }    }    @Override    protected void onPause() {        super.onPause();        if (mCursor != null) {            // Write the title back to the note             ContentValues values = new ContentValues();            values.put(Notes.TITLE, mText.getText().toString());            getContentResolver().update(mUri, values, null, null);        }    }    public void onClick(View v) {        // When the user clicks, just finish this activity.        // onPause will be called, and we save our data there.        finish();    }}