等待的那个卷卷的

主要是等待框加入到屏幕正中

package com.ct.waiting;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity implements OnClickListener {
    /** Called when the activity is first created. */
    Waiting mWaiting;
    private Button btnShow;
    private Button btnHide;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        init();
    }
    
    private void init(){
        btnShow = (Button)findViewById(R.id.btn_showwaiting);
        btnHide = (Button)findViewById(R.id.btn_hidewaiting);
        
        btnHide.setOnClickListener(this);
        btnShow.setOnClickListener(this);
    }
    
    private void showWaiting(){
        if(mWaiting == null){
            mWaiting = new Waiting(this);
        }else {
            mWaiting.showWaiting(R.string.waiting);
        }
    }
    
    private void hideWaiting(){
        if(mWaiting != null){
            mWaiting.hideWaiting();
        }
    }



    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        switch (v.getId()) {
        case R.id.btn_hidewaiting:
            hideWaiting();
            break;
        case R.id.btn_showwaiting:
            showWaiting();
        break;
        
        default:
            break;
        }
    }
}

waiting类

package com.ct.waiting;

import android.content.Context;
import android.graphics.PixelFormat;
import android.os.Handler;
import android.os.Message;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.view.WindowManager.LayoutParams;
import android.widget.TextView;

public class Waiting {

    private Context context;
    private View waitView;
    private int tipResId;
    private boolean blur;

    private WindowManager windowManager;
    private Handler handler;

    private boolean waiting;

    public Waiting(Context context) {
        this.context = context;
        this.blur = false;
        this.waiting = false;
        this.windowManager = (WindowManager) context
                .getSystemService(Context.WINDOW_SERVICE);
    }

    public void wait(final Runnable runnable) {
        if (runnable == null)
            return;
        if (handler == null) {
            handler = new Handler() {
                @Override
                public void handleMessage(Message msg) {
                    hideWaiting();
                }
            };
        }
        showWaiting();
        new Thread() {
            public void run() {
                handler.removeMessages(0);
                try {
                    runnable.run();
                } catch (Throwable e) {
                }
                handler.sendEmptyMessage(0);
            };
        }.start();
    }

    public synchronized void showWaiting() {
        // showWaiting(tipResId);
        showWaiting(-1);
    }

    public synchronized void showWaiting(int tipResId) {
        try {
            if (waiting)
                return;
            if (waitView == null) {
                LayoutInflater inflate = LayoutInflater.from(context);
                waitView = inflate.inflate(R.layout.waiting_layout, null);
            }
            if (tipResId > 0) {
                ((TextView) waitView.findViewById(R.id.identify_label))
                        .setText(tipResId);
            }
            int flags = blur ? LayoutParams.FLAG_FULLSCREEN
                    | LayoutParams.FLAG_BLUR_BEHIND
                    : LayoutParams.FLAG_NOT_FOCUSABLE
                            | LayoutParams.FLAG_NOT_TOUCHABLE;
            LayoutParams lp = new LayoutParams(
                    ViewGroup.LayoutParams.WRAP_CONTENT,
                    ViewGroup.LayoutParams.WRAP_CONTENT,
                    LayoutParams.TYPE_APPLICATION, flags,
                    PixelFormat.TRANSLUCENT);
            windowManager.addView(waitView, lp);
            waiting = true;
        } catch (Throwable e) {
        }
    }

    public synchronized void hideWaiting() {
        try {
            if (waiting && waitView != null) {
                windowManager.removeView(waitView);
                // waitView = null;
            }
            waiting = false;
        } catch (Throwable e) {
        }
    }

    public Waiting setBlur(boolean blur) {
        this.blur = blur;
        return this;
    }

    public Waiting setTipResource(int strResId) {
        this.tipResId = strResId;
        return this;
    }

    public boolean isWaiting() {
        return waiting;
    }
}

视图文件

R.layout.waiting_layout

<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/waiting_view"
    android:layout_width="300dip"
    android:layout_height="fill_parent"
    android:background="@android:drawable/dialog_frame"
    android:orientation="horizontal"
    android:padding="20dp" >

    <ProgressBar
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_margin="5dp" />

    <TextView
        android:id="@+id/identify_label"
        android:layout_width="wrap_content"
        android:layout_height="fill_parent"
        android:gravity="center"
        android:paddingLeft="3dp"
        android:paddingRight="5dp"
        android:textColor="#eee"
        android:textSize="22dp" />

</LinearLayout>