【控件篇】ProgressBar+ProgressDialog使用案例

来源：互联网发布：天浩网络打印服务器编辑：程序博客网时间：2024/05/17 18:49

1.布局文件 activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    tools:context=".MainActivity" ><ProgressBar    android:id="@+id/main_progressbar"    android:layout_width="fill_parent"    android:layout_height="15dp"    android:layout_margin="15dp"    style="?android:attr/progressBarStyleHorizontal"    /><Button     android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_centerInParent="true"    android:text="进度对话框"    android:onClick="ShowProgressDialog"    /></RelativeLayout>

2.对应的Activity------MainActivity.java

public class MainActivity extends Activity{private ProgressBar progress_bar;private ProgressDialog progress_dialog;private boolean stopThread = false;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);initView();}public void initView(){progress_bar = (ProgressBar) findViewById(R.id.main_progressbar);progress_bar.setMax(100);progress_bar.setProgress(50);progress_dialog = new ProgressDialog(this);progress_dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);progress_dialog.setMax(100);progress_dialog.setTitle("好友列表");progress_dialog.setMessage("正在载入中。。。");progress_dialog.setButton("完成", new FinishProgressDialogListener());}public void ShowProgressDialog(View view){progress_dialog.show();progress_dialog.setProgress(0);stopThread = false;Thread loadDataThread = new Thread(new LoadDataThread());loadDataThread.start();}public class FinishProgressDialogListener implements OnClickListener{@Overridepublic void onClick(DialogInterface arg0, int arg1) {stopThread = true;try {Thread.sleep(100);} catch (InterruptedException e) {e.printStackTrace();}progress_dialog.cancel();}}public class LoadDataThread implements Runnable{Message msg = new Message();@Overridepublic void run() {for(int i=1; i<=100&&!stopThread; i++){try {Thread.sleep(1000);} catch (InterruptedException e) {e.printStackTrace();}progress_dialog.setProgress(i);}}}}

ProgressBar是直接在界面上呈现的进度条，通过在布局文件中设置ProdgressBar的style属性为

“?android:attr/progressBarStyleHorizontal”即可成为横向进度条（默认是圆形）

ProgressDialog是以对话框方式呈现出来的进度条，可在该dialog中加入按钮事件。

没什么知识点，一看就能懂的东西，这里就不在多说了！

0 0