[Android] 標題列進度條的使用

  

1）圓形旋轉進度條

public class MainActivity extends Activity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS); //設置為圓形旋轉進度條

setContentView(R.layout.main);

new MyTask().execute();

}

class MyTask extends AsyncTask{

@Override

protected void onPreExecute() {

setProgressBarIndeterminateVisibility(true);// 執行前使進度條可見

super.onPreExecute();

}

@Override

protected Void doInBackground(Void... arg0) {

// TODO 這裡可以編寫後臺耗時操作的代碼，本示例用執行緒sleep類比

for(int i=0; i<10 div="div" i="i">

try {

Thread.sleep(500);

} catch (InterruptedException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

return null;

}

@Override

protected void onPostExecute(Void result) {

setProgressBarIndeterminateVisibility(false); // 執行完後使進度條隱藏

super.onPostExecute(result);

}

}

}

  

2）水準進度條

public class MainActivity extends Activity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

requestWindowFeature(Window.FEATURE_PROGRESS); //設置為水準進度條 注意標題列的水準進度條最大值是10000,不用自己手動設置

setContentView(R.layout.main);

setSecondaryProgress(10000); //設置副進度為10000

new MyTask().execute();

}

class MyTask extends AsyncTask{

@Override

protected void onPreExecute() {

setProgressBarVisibility(true); // 執行前使進度條可見

super.onPreExecute();

}

@Override

protected Void doInBackground(Void... arg0) {

// TODO 這裡可以編寫後臺耗時操作的代碼，本示例用執行緒sleep類比

for(int i=0; i<10 div="div" i="i">

try {

Thread.sleep(500);

} catch (InterruptedException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

publishProgress(i+1);

}

return null;

}

@Override

protected void onProgressUpdate(Integer... values) {

setProgress(values[0]*1000); //動態更新最新進度

super.onProgressUpdate(values);

}

@Override

protected void onPostExecute(Void result) {

setProgressBarVisibility(false); // 執行完後使進度條隱藏

super.onPostExecute(result);

}

}

}