Android中获取,增加,删除Browser书签 .

来源：互联网发布：汉诺塔递归算法 java 编辑：程序博客网时间：2024/06/01 09:53

首先在AndroidMainfest.xml中增加对bookmark的写权限：

<uses-permission android:name="com.android.browser.permission.WRITE_HISTORY_BOOKMARKS"/>

package com.mybm;

import java.io.File;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.database.Cursor;
import android.os.Bundle;
import android.os.Environment;
import android.provider.Browser;
import android.provider.Browser.BookmarkColumns;
import android.util.Log;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class MainActivity extends Activity {
private ListView listView;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  insertBookMark();
  deleteBookMark();
  this.makeFileDir();
  listView = (ListView) findViewById(R.id.bookmarklist);
  listView.setAdapter(new ArrayAdapter<String>(this,
    android.R.layout.simple_expandable_list_item_1, getData()));

}

private List<String> getData() {

  List<String> data = new ArrayList<String>();
// data.add("哈哈哈哈");
  ContentResolver contentResolver = getContentResolver();
  Cursor cursor = contentResolver.query(Browser.BOOKMARKS_URI, null,
    null, null, null);

  while (cursor.moveToNext()) {
   if (cursor.getString(
     cursor.getColumnIndex(Browser.BookmarkColumns.BOOKMARK))
     .equals("1")) {
    data.add(cursor.getString(cursor
      .getColumnIndex(BookmarkColumns.TITLE)));
   }
  }

return data;
}

private void insertBookMark() {
  ContentValues inputValue = new ContentValues();
  // Bookmark值为1
  inputValue.put(Browser.BookmarkColumns.BOOKMARK, 1);
  // 添加书签Title
  inputValue.put(Browser.BookmarkColumns.TITLE, "witmob");
  // 添加书签URL
  inputValue.put(Browser.BookmarkColumns.URL,
    "http://bigcat.easymorse.com/");

ContentResolver contentResolver = getContentResolver();

// 向浏览器添加该书签

contentResolver.insert(Browser.BOOKMARKS_URI, inputValue);

}

private void deleteBookMark() {

ContentResolver contentResolver = getContentResolver();

// 删除书签

  int number = contentResolver.delete(Browser.BOOKMARKS_URI,
    Browser.BookmarkColumns.TITLE + "=? and "
      + Browser.BookmarkColumns.URL + "=?", new String[] {
      "witmob", "http://bigcat.easymorse.com/" });

}
public void makeFileDir(){
   File bookMarkFile = new File(Environment.getExternalStorageDirectory().getPath());
    try {
     if(!bookMarkFile.exists()){
      bookMarkFile.mkdir();
     }
     FileWriter fw =new FileWriter(bookMarkFile+File.separator+"my.txt",true);

    ContentResolver contentResolver = getContentResolver();
    Cursor cursor = contentResolver.query(Browser.BOOKMARKS_URI, null,
      null, null, null);

    while (cursor.moveToNext()) {

     if (cursor.getString(
       cursor.getColumnIndex(Browser.BookmarkColumns.BOOKMARK))
       .equals("1")) {
       fw.write(cursor.getString(cursor
        .getColumnIndex(BookmarkColumns.TITLE))+"\n");
       fw.write(cursor.getString(cursor
         .getColumnIndex(BookmarkColumns.URL))+"\n");
     }
    }


     fw.close();
  } catch (Exception e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }

}
}

增加书签，方法很简单，给ContentValues赋值，然后调用ContentResolver 的insert方法。

private void insertBookMark() {
    ContentValues inputValue = new ContentValues();
    // Bookmark值为1
    inputValue.put(Browser.BookmarkColumns.BOOKMARK, 1);
    // 添加书签Title
    inputValue.put(Browser.BookmarkColumns.TITLE, "witmob");
    // 添加书签URL
    inputValue.put(Browser.BookmarkColumns.URL,
            "http://bigcat.easymorse.com/");
    ContentResolver contentResolver = getContentResolver();
    // 向浏览器添加该书签
    contentResolver.insert(Browser.BOOKMARKS_URI, inputValue);
}

删除书签方法如下：

private void deleteBookMark() {
    ContentResolver contentResolver = getContentResolver();
    // 删除书签
    int number = contentResolver.delete(Browser.BOOKMARKS_URI,
            Browser.BookmarkColumns.TITLE + "=? and "
                    + Browser.BookmarkColumns.URL + "=?", new String[] {
                    "witmob", "http://bigcat.easymorse.com/" });
}

ContentResolver 的delete方法需要三个参数，第一个是URI，第二个参数类似sql语句的where条件，这里是：

Browser.BookmarkColumns.TITLE + "=? and "+ Browser.BookmarkColumns.URL + "=?"

第三个参数为第二个where参数中的“?”赋值，顺序要前后对应。这里String数组第一个对应TITLE，第二个对应URL。

源码链接：http://bigcateasymorse.googlecode.com/svn/trunk/androidbookmark1.1/

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