重写dialog

弹出对话框，内容显示随机的自定义内容:

public class MyProgressDialog extends Dialog {
	Context context;
	String title;
	TextView tv_title,tv_content;
	Handler handler;
	public MyProgressDialog(Context context,String title) {
		super(context,R.style.progress_Dialog);
		// TODO Auto-generated constructor stub
		this.context = context;
		this.title = title;
	}

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		int width = PublicUtil.getWidth(context);
		setContentView(R.layout.dialog);
		LinearLayout ll_root = (LinearLayout) findViewById(R.id.ll_root);
		LayoutParams lp = (LayoutParams) ll_root.getLayoutParams();
		lp.width = width*2/3;
		ll_root.setLayoutParams(lp);
		tv_content = (TextView) findViewById(R.id.tv_content);
		if(title!=null){
			tv_title = (TextView) findViewById(R.id.tv_title);
			tv_title.setText(title);
		}
		String data = PublicUtil.getSharedValue(context, "tips", "tips", context.getString(R.string.tips));
		final ArrayList<Tip> tips = PublicUtil.parserJsonList(data, "tips", Tip.class);
		handler = new Handler(){
			public void handleMessage(android.os.Message msg) {
				tv_content.setText("小贴士："+tips.get(msg.what).getContent());
				handler.sendEmptyMessageDelayed((int)(Math.random()*tips.size()), 5000);
			};
		};
		handler.sendEmptyMessage((int)(Math.random()*tips.size()));
	}

	public void setTitle(String title) {
		this.title = title;
		tv_title.setText(title);
	}
}

<style name="progress_Dialog" parent="@android:Theme.Dialog">
        <item name="android:windowFrame">@null</item>
        <item name="android:windowNoTitle">true</item>
        <item name="android:windowBackground">@drawable/none</item>
        <item name="android:windowIsFloating">true</item>
        <item name="android:windowContentOverlay">@null</item>
    </style>

调用：
myProgressDialog = new MyProgressDialog(this, “我的标题,可传null”);
myPro...show();
myPro...dismiss()