Android 学习心得(6)——ProgressBar(进度条)

没什么技术含量就是对系统进度条的简单应用

贴上代码

package cn.bwl.progressbar;

import android.support.v7.app.ActionBarActivity;
import android.view.View;
import android.widget.Button;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.annotation.SuppressLint;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;

public class MainActivity extends ActionBarActivity {
     private TextView text1 ;
     private TextView text2 ;
     private TextView text3 ;
     private ProgressBar bar1 ;
     private ProgressBar bar2 ;
     private ProgressBar bar3 ;
     private Button button ;
     private int counter;
     //自定义Handler消息
     protected static final int STOP_1 = 0x1;  
     protected static final int STOP_2 = 0x2;  
     protected static final int STOP_3 = 0x3;  
     protected static final int THREADING_1 = 0x4;  
     protected static final int THREADING_2 = 0x5;  
     protected static final int THREADING_3 = 0x6;  
     
     //定义Handler
     @SuppressLint("HandlerLeak") 
     private Handler handler =new Handler(){
            @Override
            //当有消息发送出来的时候就执行Handler的这个方法
            public void handleMessage(Message msg){
            switch (msg.what) {
            case STOP_1:
                text1.setText("进度条执行结束");
                bar1.setVisibility(View.GONE);//设置隐藏进度条
                break;
            case STOP_2:
                text2.setText("进度条执行结束");
                bar2.setVisibility(View.GONE);//设置隐藏进度条
                break;

            case STOP_3:
                text3.setText("进度条执行结束");
                bar3.setVisibility(View.GONE);//设置隐藏进度条
                break;

            case THREADING_1:
                bar1.setProgress(counter);
                //将进度条显示在TextView控件中
                text1.setText(getResources().getText(counter, "进度条开始")
                        + Integer.toString(counter) + "%
" + "进度:"
                                + Integer.toString(bar1.getProgress()) + "
"
                                + "Indeterminate:"
                                + Boolean.toString(bar1.isIndeterminate()));
                break;
            case THREADING_2:
                bar2.setProgress(counter);
                //将进度条显示在TextView控件中
                text2.setText(getResources().getText(counter, "进度条开始")
                        + Integer.toString(counter) + "%
" + "进度:"
                                + Integer.toString(bar2.getProgress()) + "
"
                                + "Indeterminate:"
                                + Boolean.toString(bar2.isIndeterminate()));
                break;
            case THREADING_3:
                bar3.setProgress(counter);
                //将进度条显示在TextView控件中
                text3.setText(getResources().getText(counter, "进度条开始")
                        + Integer.toString(counter) + "%
" + "进度:"
                                + Integer.toString(bar3.getProgress()) + "
"
                                + "Indeterminate:"
                                + Boolean.toString(bar3.isIndeterminate()));
                break;

            default:
                break;
            }
            super.handleMessage(msg);
            }
            };
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //获取控件句柄
        text1 = (TextView) this.findViewById(R.id.text1);
        text2 = (TextView) this.findViewById(R.id.text2);
        text3 = (TextView) this.findViewById(R.id.text3);
        bar1 = (ProgressBar) this.findViewById(R.id.bar1);
        bar2 = (ProgressBar) this.findViewById(R.id.bar2);
        bar3 = (ProgressBar) this.findViewById(R.id.bar3);
        button = (Button) this.findViewById(R.id.button);
        //设置indeterminate模式为false
        bar1.setIndeterminate(false);
        bar2.setIndeterminate(false);
        bar3.setIndeterminate(false);
        //button设置监听器
        button.setOnClickListener(new View.OnClickListener() {
            
            @Override
            public void onClick(View arg0) {
                //传输文本进入textView
                text1.setText("水平进度条开始！");
                text2.setText("小圆圈进度条开始！");
                text3.setText("大圆圈进度条开始！");
                //设置显示三个进度条控件
                bar1.setVisibility(View.VISIBLE);
                bar2.setVisibility(View.VISIBLE);
                bar3.setVisibility(View.VISIBLE);
                //指定三个进度条最大显示
                bar1.setMax(100);
                bar2.setMax(100);
                bar3.setMax(100);
                //设置进度条初始值
                bar1.setProgress(0);
                bar2.setProgress(0);
                bar3.setProgress(0);
                /*
                 * 设置新线程
                 */
                new Thread(new Runnable() {
                    
                    @Override
                    public void run() {
                        //进度条一共跳动10次 做10次循环
                        for(int i=0;i<10;i++){
                            try {
                                //记录循环进度
                                counter =(i+1)*10;
                                //线程睡眠1秒
                                Thread.sleep(1000);
                                //运行到10秒的时候结束
                                if(i==9){
                                    //新建msg
                                    Message msg1 = new Message();
                                    Message msg2 = new Message();
                                    Message msg3 = new Message();
                                    //用what传递参数,制定传递到handler过去的参数
                                    msg1.what = MainActivity.STOP_1;
                                    msg2.what = MainActivity.STOP_2;
                                    msg3.what = MainActivity.STOP_3;
                                    //发送消息
                                    MainActivity.this.handler.sendMessage(msg1);
                                    MainActivity.this.handler.sendMessage(msg2);
                                    MainActivity.this.handler.sendMessage(msg3);
                                }else{
                                    //不结束循环每次执行的进程
                                    //新建msg
                                    Message msg1 = new Message();
                                    Message msg2 = new Message();
                                    Message msg3 = new Message();
                                    //用what传递参数,制定传递到handler过去的参数
                                    msg1.what = MainActivity.THREADING_1;
                                    msg2.what = MainActivity.THREADING_2;
                                    msg3.what = MainActivity.THREADING_3;
                                    //发送消息
                                    MainActivity.this.handler.sendMessage(msg1);
                                    MainActivity.this.handler.sendMessage(msg2);
                                    MainActivity.this.handler.sendMessage(msg3);
                                }
                            } catch (InterruptedException e) {
                                e.printStackTrace();
                            }
                        }
                    }
                }).start();
                
            }
        });

    }


}

界面布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="cn.bwl.progressbar.MainActivity"
    tools:ignore="MergeRootFrame" >

    <TextView
        android:id="@+id/text1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <ProgressBar
        android:id="@+id/bar1"
        style="?android:attr/progressBarStyleHorizontal"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />

    <TextView
        android:id="@+id/text2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <ProgressBar
        android:id="@+id/bar2"
        style="?android:attr/progressBarStyleSmall"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />

    <TextView
        android:id="@+id/text3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <ProgressBar
        android:id="@+id/bar3"
        style="?android:attr/progressBarStyleLarge"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/ok" />

</LinearLayout>

做这个的时候竟然出奇的没有碰到任何问题，简直是奇迹