总结

Posted 2022-11-27 z_fishLong

1 创建桌面快捷方式

	//启动代码安装快捷方式
	Intent intent = new Intent();
	intent.setAction("com.android.launcher.action.INSTALL_SHORTCUT");
	intent.putExtra(Intent.EXTRA_SHORTCUT_NAME, "手机卫士");
	intent.putExtra(Intent.EXTRA_SHORTCUT_ICON,
				BitmapFactory.decodeResource(getResources(), R.drawable.safe));

	//手机卫士开启的意图
	Intent homeIntent = new Intent();
	homeIntent.setAction("com.ilmare.mobilesafe.home");
	homeIntent.addCategory("android.intent.category.DEFAULT");
	intent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, homeIntent);
	sendBroadcast(intent);

需要的权限：

        <uses-permission android:name="com.android.launcher.permission.INSTALL_SHORTCUT" />

要打开的activity在清单文件中的配置

       <activity android:name="com.ilmare.mobilesafe.HomeActivity" >
            <intent-filter>
                <action android:name="com.ilmare.mobilesafe.home" />
                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>

2 拷贝资产（asset）目录下的数据库

<pre name="code" class="html">          private void copyDB(String dbfilename) 
		File file = new File(getFilesDir(), dbfilename);
		if (file.exists() && file.length() > 0) 
			Log.i(TAG, "数据库文件已经拷贝过了，无需重复拷贝");
		 else 
			try 
				// 数据库文件只需要拷贝一次，如果已经拷贝成功了。以后就不需要重复的拷贝了
				AssetManager am = getAssets();
				InputStream is = am.open(dbfilename);
				// 创建一个文件 /data/data/包名/files/address.db
				FileOutputStream fos = new FileOutputStream(file);
				byte[] buffer = new byte[1024];
				int len = 0;
				while ((len = is.read(buffer)) != -1) 
					fos.write(buffer, 0, len);
				
				is.close();
				fos.close();
			 catch (IOException e) 
				e.printStackTrace();
			
		
	

getFilesDir() //获取内部存储文件的位置   data/data/packageName/files/.
<pre name="code" class="html">

<pre name="code" class="html"><pre style="background-color:#2b2b2b;color:#a9b7c6;font-family:'Consolas';font-size:12.0pt;">getCacheDir() //获取内部缓存文件的位置   data/data/packageName/caches/.   

3 Afinal  下载

if (Environment.getExternalStorageState().equals(
      Environment.MEDIA_MOUNTED)) 
   // 下载新的apk 路径 path
   FinalHttp fh = new FinalHttp();
   fh.download(path, Environment.getExternalStorageDirectory()
         .getAbsolutePath() + "/update.apk", new AjaxCallBack<File>() 

      @Override
      public void onFailure(Throwable t, int errorNo,
                       String strMsg) 
         Toast.makeText(getApplicationContext(),
               "更新失败", 0).show();
         enterHome();
         t.printStackTrace();
         super.onFailure(t, errorNo, strMsg);
      

      @Override
      public void onLoading(long count, long current) 
         super.onLoading(count, current);
         int progress = (int) (current * 100 / count);
         tv_splash_updateinfo.setText("正在下载："
               + progress + "%");
      

      @Override
      public void onSuccess(File t) 
         super.onSuccess(t);
         installApk(t);
      

      /**
       * 安装一个apk文件
       *
       * @param t
       */
      private void installApk(File t) 
         Intent intent = new Intent();
         intent.setAction("android.intent.action.VIEW");
         intent.addCategory("android.intent.category.DEFAULT");
         intent.setDataAndType(Uri.fromFile(t),
               "application/vnd.android.package-archive");
         startActivity(intent);
      
   );