Android开发手记(8) ProgressDialog的使用

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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)。
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　　ProgressDialog常用的方法有以下几种：

progressDialog = new ProgressDialog(MainActivity.this);   // 新建一个progressDialogprogressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); // 设置样式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

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