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