Android开发手记(8) ProgressDialog的使用

　　ProgressDialog，进度对话框。一般有两种，一种是圆形的进度条(ProgressDialog.STYLE_SPINNER)，另一种是长条形的进度条(ProgressDialog.STYLE_HORIZONTAL)。

 

　　ProgressDialog常用的方法有以下几种：

  progressDialog = new ProgressDialog(MainActivity.this);             // 新建一个ProgressDialog
  progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);   // 设置ProgressDialog的样式
  progressDialog.setTitle("Note:");                                   // 设置标题
  progressDialog.setMessage("这是一个水平进度条");                       // 设置显示内容
  progressDialog.setIndeterminate(false);                             // 是否是不确定状态
  progressDialog.setCancelable(true);                                 // 是否可以取消
  progressDialog.setProgress(0);                                      // 设置初始进度
  progressDialog.setMax(200);                                         // 设置最大进度
  progressDialog.setSecondaryProgress(100);                           // 设置第二进度（可用于缓冲显示）
  progressDialog.setButton(DialogInterface.BUTTON_POSITIVE, "OK", new DialogInterface.OnClickListener() {
      @Override                                                       // 设置按钮
      public void onClick(DialogInterface dialogInterface, int i) {   // DialogInterface表示按钮位置
          progressDialog.cancel();                                    // BUTTON_POSITIVE 为最右边
      }                                                               // BUTTON_NEUTRAL  为在中间
  });                                                                 // BUTTON_NEGATIVE 为最左边
  progressDialog.show();                                              // 显示ProgressDialog

1、圆形进度条

         btnCricleDlg = (Button)findViewById(R.id.btnCircleDlg);

         btnCricleDlg.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
                 progressDialog = new ProgressDialog(MainActivity.this);
                 progressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
                 progressDialog.setTitle("Note:");
                 progressDialog.setMessage("这是一个圆形进度条");
                 progressDialog.setIndeterminate(false);
                 progressDialog.setCancelable(true);
                 progressDialog.setButton(DialogInterface.BUTTON_POSITIVE, "OK", new DialogInterface.OnClickListener() {
                     @Override
                     public void onClick(DialogInterface dialog, int witch) {
                         progressDialog.cancel();
                     }
                 });
                 progressDialog.setButton(DialogInterface.BUTTON_NEGATIVE,"CANCEL",new DialogInterface.OnClickListener(){
                     @Override
                     public void onClick(DialogInterface dialog, int witch){
                         progressDialog.cancel();
                     }
                 });
                 progressDialog.show();
             }
         });

2、长形进度条

       btnLongDlg = (Button) findViewById(R.id.btnLongDlg);
       btnLongDlg.setOnClickListener(new View.OnClickListener() {
             int count = 0;
             @Override
             public void onClick(View view) {
                 progressDialog = new ProgressDialog(MainActivity.this);             // 新建一个ProgressDialog
                 progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);   // 设置ProgressDialog的样式
                 progressDialog.setTitle("Note:");                                   // 设置标题
                 progressDialog.setMessage("这是一个水平进度条");                      // 设置显示内容
                 progressDialog.setIndeterminate(false);                             // 是否是不确定状态
                 progressDialog.setCancelable(true);                                 // 是否可以取消
                 progressDialog.setProgress(0);                                      // 设置初始进度
                 progressDialog.setMax(200);                                         // 设置最大进度
                 progressDialog.setSecondaryProgress(100);                           // 设置第二进度（可用于缓冲显示）
                 progressDialog.setButton(DialogInterface.BUTTON_POSITIVE, "OK", new DialogInterface.OnClickListener() {
                     @Override                                                       // 设置按钮
                     public void onClick(DialogInterface dialogInterface, int i) {   // DialogInterface表示按钮位置
                         progressDialog.cancel();                                    // BUTTON_POSITIVE 为最右边
                     }                                                               // BUTTON_NEUTRAL  为在中间
                 });                                                                 // BUTTON_NEGATIVE 为最左边
                 progressDialog.show();                                              // 显示ProgressDialog

                 new Thread(){
                     public void run(){
                         while(count<=200){
                             try{
                                 Thread.sleep(100);
                                 progressDialog.incrementProgressBy(1);
                             }catch(Exception e){

                             }

                         }
                     }

                 }.start();
             }
         });

3、完整代码

 import android.app.ProgressDialog;
 import android.content.DialogInterface;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
 import android.view.View;
 import android.widget.Button;

 public class MainActivity extends AppCompatActivity {

     private Button btnCricleDlg;
     private Button btnLongDlg;
     private ProgressDialog progressDialog;

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);

         btnCricleDlg = (Button)findViewById(R.id.btnCircleDlg);
         btnLongDlg = (Button) findViewById(R.id.btnLongDlg);

         btnCricleDlg.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
                 progressDialog = new ProgressDialog(MainActivity.this);
                 progressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
                 progressDialog.setTitle("Note:");
                 progressDialog.setMessage("这是一个圆形进度条");
                 progressDialog.setIndeterminate(false);
                 progressDialog.setCancelable(true);
                 progressDialog.setButton(DialogInterface.BUTTON_POSITIVE, "OK", new DialogInterface.OnClickListener() {
                     @Override
                     public void onClick(DialogInterface dialog, int witch) {
                         progressDialog.cancel();
                     }
                 });
                 progressDialog.setButton(DialogInterface.BUTTON_NEGATIVE,"CANCEL",new DialogInterface.OnClickListener(){
                     @Override
                     public void onClick(DialogInterface dialog, int witch){
                         progressDialog.cancel();
                     }
                 });
                 progressDialog.show();
             }
         });

         btnLongDlg.setOnClickListener(new View.OnClickListener() {
             int count = 0;
             @Override
             public void onClick(View view) {
                 progressDialog = new ProgressDialog(MainActivity.this);             // 新建一个ProgressDialog
                 progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);   // 设置ProgressDialog的样式
                 progressDialog.setTitle("Note:");                                   // 设置标题
                 progressDialog.setMessage("这是一个水平进度条");                    // 设置显示内容
                 progressDialog.setIndeterminate(false);                             // 是否是不确定状态
                 progressDialog.setCancelable(true);                                 // 是否可以取消
                 progressDialog.setProgress(0);                                      // 设置初始进度
                 progressDialog.setMax(200);                                         // 设置最大进度
                 progressDialog.setSecondaryProgress(100);                           // 设置第二进度（可用于缓冲显示）
                 progressDialog.setButton(DialogInterface.BUTTON_POSITIVE, "OK", new DialogInterface.OnClickListener() {
                     @Override                                                       // 设置按钮
                     public void onClick(DialogInterface dialogInterface, int i) {   // DialogInterface表示按钮位置
                         progressDialog.cancel();                                    // BUTTON_POSITIVE 为最右边
                     }                                                               // BUTTON_NEUTRAL  为在中间
                 });                                                                 // BUTTON_NEGATIVE 为最左边
                 progressDialog.show();                                              // 显示ProgressDialog

                 new Thread(){
                     public void run(){
                         while(count<=200){
                             try{
                                 Thread.sleep(100);
                                 progressDialog.incrementProgressBy(1);
                             }catch(Exception e){

                             }

                         }
                     }

                 }.start();
             }
         });

     }

 }

MainActivity.java