Android自定义动态布局 — 多图片上传
本文介绍Android中动态布局添加图片，多图片上传。
项目中效果图：
技术点：
1.动态添加格局中的线条和添加图片的+号
2.多张图片异步上传
首先来看一下布局文件：
<LinearLayout xmlns:android="/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:background="#f2f2f2" ><LinearLayoutandroid:id="@+id/layout_CONTENT"android:layout_width="match_parent"android:layout_height="match_parent"android:background="#f2f2f2"android:orientation="vertical"android:padding="5dp" ><!-- 布局由程序动态生成 --><LinearLayoutandroid:id="@+id/layout_container"android:layout_width="300dp"android:layout_height="wrap_content"android:layout_gravity="center_horizontal"android:layout_margin="5dp"android:background="#cbcbcb"android:orientation="vertical"android:padding="0.2px" /><TextViewandroid:id="@+id/text_no_data"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_margin="20dp"android:text="@string/text_picture_upload"android:textSize="16dp" /></LinearLayout></LinearLayout>
布局很简单，主要是id为layout_container的一个LinearLayout作为父布局。
横向的线条和纵向的线条布局也很简单：
<View xmlns:android="/apk/res/android"android:layout_width="match_parent"android:layout_height="1px"android:background="#cbcbcb" />
<View xmlns:android="/apk/res/android"android:layout_width="1px"android:layout_height="match_parent"android:background="#cbcbcb" />
下面是动态生成布局的实现方式：
private void initUI() {setContentView(R.layout.activity_main);//setTitle(R.string.button_service_upload_picture);//showBackwardView(R.string.button_backward, true);//showForwardView(R.string.button_upload,true);//最顶层父布局mLayout = (ViewGroup) findViewById(R.id.layout_container);final int count = 9; //9格final int rowCount = (count + 2) / 3;for (int i = 0; i < rowCount; i++) {if (i != 0) {//加载横向布局线条View.inflate(this, R.layout.layout_line_horizonal, mLayout);}//创建布局对象，设置按下颜色final LinearLayout linearLayout = new LinearLayout(this);linearLayout.setBackgroundResource(R.drawable.row_selector);for (int j = 0; j < 3; j++) {if (j != 0) {//加载内层纵向布局线条View.inflate(this, R.layout.layout_line_vertical, linearLayout);}ImageButton imageButton = new ImageButton(this);imageButton.setBackgroundResource(R.drawable.row_selector);imageButton.setTag(TAG);imageButton.setOnClickListener(this);imageButton.setEnabled(false);LinearLayout.LayoutParams layoutParams =new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT, 1.0f);//添加到linearLayout布局中linearLayout.addView(imageButton, layoutParams);//将imageButton对象添加到列表mImageButtonList.add(imageButton);}DisplayManager manager = DisplayManager.getInstance();LayoutParams layoutParams = new LayoutParams(LayoutParams.MATCH_PARENT, manager.dipToPixel(100));//将View添加到总父布局mLayout.addView(linearLayout, layoutParams);}//外层设置ImageButton属性final ImageButton currentImageButton = mImageButtonList.get(mCurrent);currentImageButton.setImageResource(R.drawable.ic_add_picture);currentImageButton.setScaleType(ScaleType.CENTER);currentImageButton.setEnabled(true);}
图片上传功能：
private class UploadPictureTask extends AsyncTask<List<String>, Integer, String> {/* (non-Javadoc)* @see android.os.AsyncTask#doInBackground(Params[])*/@Overrideprotected String doInBackground(List<String>... params) {final List<String> pictureList = params[0];for (int i = 0, len = pictureList.size(); i < len; i++) {final File file = new File(pictureList.get(i));//final String response = ApacheHttpUtils.post(mUrlPrefix + "/upload", new File[] {file});// 解析，存储//final UploadInfo upload = new UploadParser().parse(response).getData();/*if (upload != null) {final String url = upload.getUrl();if (url != null) {mPictureUrlList.add(url);}}*/publishProgress(i);}return null;}/* (non-Javadoc)* @see android.os.AsyncTask#onProgressUpdate(Progress[])*/@Overrideprotected void onProgressUpdate(Integer... values) {}/* (non-Javadoc)* @see android.os.AsyncTask#onPostExecute(java.lang.Object)*/@Overrideprotected void onPostExecute(String result) {//addPictures();super.onPostExecute(result);}}
注：类中声明了三个列表去保存之前所操作的记录
mImageButtonList = new ArrayList<ImageButton>();mPicturePathList = new ArrayList<String>();mPictureUrlList = new ArrayList<String>();
关于细节大家感兴趣的下载源码学习吧。
欢迎下载源码：/download/gao_chun/8776533
转载请注明.
