Android自己定义动态布局 — 多图片上传 - Android

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Android自己定义动态布局 — 多图片上传

本文介绍Android中动态布局加入图片，多图片上传。

项目中效果图：

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技术点：

1.动态加入格局中的线条和加入图片的+号

2.多张图片异步上传

首先来看一下布局文件：

布局非常easy。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非常easy：

以下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) {
//载入横向布局线条
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) {
//载入内层纵向布局线条
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);
//加入到linearLayout布局中
linearLayout.addView(imageButton, layoutParams); //将imageButton对象加入到列表
mImageButtonList.add(imageButton);
} DisplayManager manager = DisplayManager.getInstance();
LayoutParams layoutParams = new LayoutParams(LayoutParams.MATCH_PARENT, manager.dipToPixel(100));
//将View加入到总父布局
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[])
*/
@Override
protected 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[])
*/
@Override
protected void onProgressUpdate(Integer... values) { } /* (non-Javadoc)
* @see android.os.AsyncTask#onPostExecute(java.lang.Object)
*/
@Override
protected void onPostExecute(String result) {
//addPictures();
super.onPostExecute(result);
}
}