android开发过程中遇到的一些问题（包括自定义ProgressBar, Intent, Animation, ListView, RadioButton）

问题如下：

1.在自定义的ListView中，在一个Item中同时添加图片、文字、单选按钮时很困难。

最简单的解决办法（网上摘录）：

把单选按钮用图片表示即可，然后使用SimpleAdapter放进ListView中，代码如下

simpleAdapter = new SimpleAdapter(this, getData(),R.layout.picture_info, new String[] { imageViewIdStr,pictureNameIdStr, picturePixelIdStr, radioImageIdStr },new int[] { R.id.imageViewId, R.id.pictureNameId,R.id.picturePixelId, R.id.radioImageId });listView.setOnItemClickListener(new OnListClickListener());listView.setAdapter(simpleAdapter);//////////////////////////////////private class OnListClickListener implements OnItemClickListener {public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,long arg3) {// TODO Auto-generated method stubChangeRadioImage(selectItemIndex, false);ChangeRadioImage(arg2, true);selectItemIndex = arg2;}//主要是下面这个函数用来选中和未选中时交换图片的private void ChangeRadioImage(int position, boolean isChangeImage) {SimpleAdapter tmpSimpleAdapter = simpleAdapter;HashMap<String, Object> hm = (HashMap<String, Object>) simpleAdapter.getItem(position);if (isChangeImage) {hm.put("radioImageId", R.drawable.pressed);} else {hm.put("radioImageId", R.drawable.press);}tmpSimpleAdapter.notifyDataSetChanged();}

2.在ListView中选中一项时，要弹出一个对话框，框中要有动画，这个困扰我很久，其实就是自定义对话框。

解决办法：

（1）使用AnimationDrawable，但是使用它时必须要以事件触发控件才能使图片活动起来，此办法不佳，代码如下

AlertDialog.Builder alertBuild = new AlertDialog.Builder(this);//创建对话框构造器 AlertDialog alertDialog; LayoutInflater inflater = LayoutInflater.from(this); View layout = inflater.inflate(R.layout.anim_dialog, (ViewGroup) findViewById(R.id.layoutId)); imageAnim = (ImageView) layout.findViewById(R.id.imageAnimId); imageAnim.setBackgroundResource(R.drawable.fly01_anim); Button btn = (Button) layout.findViewById(R.id.testButtonId); btn.setOnClickListener(new OnClickListener() { public void onClick(View v) { // TODO Auto-generated method stub AnimationDrawable anim = (AnimationDrawable) imageAnim .getBackground(); anim.stop(); anim.start(); } }); alertBuild.setTitle(pictureName[id]); alertBuild.setView(layout); alertDialog = alertBuild.create(); return alertDialog; ///////////anim_dialog.xml<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/layoutId" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical"> <ImageView android:id="@+id/imageAnimId" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <Button android:id="@+id/testButtonId" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Test"/> </LinearLayout>//////////////////////fly01_anim.xml<?xml version="1.0" encoding="utf-8"?><animation-listxmlns:android="http://schemas.android.com/apk/res/android"android:oneshot="false"><item android:drawable="@drawable/fly01001" android:duration="100" /><item android:drawable="@drawable/fly01002" android:duration="100" /><item android:drawable="@drawable/fly01003" android:duration="100" /><item android:drawable="@drawable/fly01004" android:duration="100" /><item android:drawable="@drawable/fly01005" android:duration="100" /><item android:drawable="@drawable/fly01006" android:duration="100" /></animation-list>

(2)在对话框布局文件中添加ProgressBar，再结合AlertDialog来达到目的。代码如下

private void showImageAnimation(int position) {AlertDialog.Builder alertBuild = new AlertDialog.Builder(FlyWidgetActivity.this);AlertDialog alertDialog;LayoutInflater inflater = LayoutInflater.from(FlyWidgetActivity.this);View layout = inflater.inflate(R.layout.anim_dialog,(ViewGroup) findViewById(R.id.layoutId));alertBuild.setTitle(pictureName[position]);alertBuild.setView(layout);alertDialog = alertBuild.create();alertDialog.show();} //////////在anim_dialog.xml中添加<ProgressBar android:id="@+id/ProgressBar01" style="@style/animStyle" mce_style="@style/animStyle"android:layout_width="140dp" android:layout_height="140dp"></ProgressBar>

学习的小项目总算告一段落了