进度对话框 ProgressDialog 用法总结

ProgressDialog 继承自AlertDialog，AlertDialog继承自Dialog

public class ProgressDialog extends AlertDialog

ProgressDialog的创建方式有两种，一种是new ProgressDialog，一种是调用ProgressDialog的静态方法show()创建并显示，这种进度条只能是圆形条。

ProgressDialog dialog = ProgressDialog.show(this, "提示", "正在登陆中…", true, false, null);

常用方法

setProgressStyle：设置进度条风格，风格为圆形，旋转的。
setTitlt：设置标题
setMessage：设置提示信息；
setIcon：设置标题图标；
setIndeterminate：设置ProgressDialog 的进度条是否不明确；这个属性对于ProgressDailog默认的转轮模式没有实际意义，默认下设置为true，它仅仅对带有ProgressBar的Dialog有作用。修改这个属性为false后可以实时更新进度条的进度。
setCancelable：设置ProgressDialog 是否可以按返回键取消；
cancelListner:当前Dialog强制取消之后将会被执行，通常用来清理未完成的任务。
setButton：设置ProgressDialog 的一个Button（需要监听Button事件）；
show：显示ProgressDialog。
cancel：删除progressdialog
dismiss：删除progressdialog 作用和cancel相同
setMax(int)、getMax：设置最大进度条的值
setProgress(int)、getProgress：更新进度条，当然一般都需要Handler的结合来更新进度条
incrementProgressBy(int)增加进度条
setProgressDrawable：设置progress发生变化时的进度指示条的背景图

Mainactivity

public class MainActivity extends ListActivity {

private ProgressDialog dialog;

private AlertDialog alertDialog;

private ProgressDialogFragment dialogFragment;

private Handler mHandler = new Handler() {

@Override

public void handleMessage(android.os.Message msg) {

switch (msg.what) {

case 0:

dialog.cancel();// cancel和dismiss唯一的区别是，调用cancel方法会【回调】OnCancelListener

break;

case 1:

int progress = (Integer) msg.obj;

if (progress < 20) {

dialog.incrementProgressBy(5);// 增加进度条的进度

mHandler.sendMessageDelayed(Message.obtain(mHandler, 1, progress + 1), 150);

} else dialog.dismiss();

break;

case 2:

alertDialog.dismiss();

break;

case 3:

getFragmentManager().beginTransaction().remove(dialogFragment).commit();

break;

}

};

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

String[] array = { "ProgressDialog.STYLE_SPINNER：不确定的圆形滚动条",//

"ProgressDialog.STYLE_HORIZONTAL：确定的水平滚动条", //

"通过AlertDialog实现不确定圆形滚动条效果，其View包含一个ProgressBar",//

"通过DialogFragment实现不确定圆形滚动条效果，其View包含一个ProgressBar", };

setListAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, new ArrayList<String>(Arrays.asList(array))));

Fragment fragment = getFragmentManager().findFragmentByTag("ProgressDialogFragment");

//旋转屏幕后dialogFragment为空，但是findFragmentByTag的结果不为空，所以dialogFragment将永远不会消失

if (fragment != null) {

if (dialogFragment == null) Toast.makeText(MainActivity.this, "dialogFragment为空，findFragmentByTag不为空", Toast.LENGTH_SHORT).show();

getFragmentManager().beginTransaction().remove(fragment).commit();

}

@Override

protected void onDestroy() {

super.onDestroy();

if (mHandler != null) mHandler.removeCallbacksAndMessages(null);

}

@Override

protected void onListItemClick(ListView l, View v, int position, long id) {

switch (position) {

case 0://旋转屏幕后直接消失

showPD();

mHandler.sendEmptyMessageDelayed(0, 3000);

break;

case 1://旋转屏幕后直接消失

showHorizontalPD();

mHandler.sendMessageDelayed(Message.obtain(mHandler, 1, 0), 150);

break;

case 2://旋转屏幕后直接消失

showAlertDialog();

mHandler.sendEmptyMessageDelayed(2, 3000);

break;

case 3://旋转屏幕后会重新创建

showDialogFragment();

mHandler.sendEmptyMessageDelayed(3, 3000);

break;

}

private void showPD() {

dialog = new ProgressDialog(this);

dialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);//转盘

dialog.setCancelable(false);

dialog.setCanceledOnTouchOutside(false);

dialog.setTitle("提示");

dialog.setOnDismissListener(new DialogInterface.OnDismissListener() {

@Override

public void onDismiss(DialogInterface dialog) {

Toast.makeText(MainActivity.this, "消失了", Toast.LENGTH_SHORT).show();

}

});

dialog.setMessage("正在加载，请稍后……");

dialog.show();

}

private void showHorizontalPD() {

dialog = new ProgressDialog(this);

dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);

dialog.setCancelable(true);

dialog.setCanceledOnTouchOutside(false);

dialog.setIcon(R.drawable.ic_launcher);//这里指的是标题左侧的图标。注意：如果没有设置title只设置Icon的话，是不会显示图标的

dialog.setTitle("提示");

dialog.setMax(100);

dialog.setButton(DialogInterface.BUTTON_POSITIVE, "确定…", new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

Toast.makeText(MainActivity.this, "确定", Toast.LENGTH_SHORT).show();

}

});

dialog.setButton(DialogInterface.BUTTON_NEGATIVE, "取消…", new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

Toast.makeText(MainActivity.this, "取消", Toast.LENGTH_SHORT).show();

}

});

dialog.setMessage("正在加载，请稍后……");

dialog.show();

}

private void showAlertDialog() {

alertDialog = new AlertDialog.Builder(this).setView(R.layout.layout).create();

alertDialog.getWindow().setBackgroundDrawableResource(android.R.color.transparent);//设置Dialog背景透明效果

alertDialog.show();

}

private void showDialogFragment() {

dialogFragment = ProgressDialogFragment.newInstance("加载中…");

dialogFragment.show(getFragmentManager(), "ProgressDialogFragment");

}

ProgressDialogFragment

public class ProgressDialogFragment extends DialogFragment {

/**构造时把传入的参数带进来，注意一定要通过Bundle及setArguments传递数据*/

public static ProgressDialogFragment newInstance(String message) {

Bundle bundle = new Bundle();//把所有需要传递的数据都放在Bundle中

bundle.putString("message", message);

ProgressDialogFragment dialog = new ProgressDialogFragment();

dialog.setArguments(bundle);//通过setArguments把Bundle传递过去

return dialog;

}

@SuppressLint("InflateParams")

@Override

public Dialog onCreateDialog(Bundle savedInstanceState) {

View contentView = getActivity().getLayoutInflater().inflate(R.layout.layout, null);

TextView tv_messag = (TextView) contentView.findViewById(R.id.tv_messag);

if (getArguments() != null && !TextUtils.isEmpty(getArguments().getString("message"))) {

tv_messag.setVisibility(View.VISIBLE);

tv_messag.setText(getArguments().getString("message"));

} else tv_messag.setVisibility(View.GONE);

Dialog dialog = new Dialog(getActivity());

dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);//设置Dialog没有标题。需在setContentView之前设置，在之后设置会报错

dialog.getWindow().setBackgroundDrawableResource(android.R.color.transparent);//设置Dialog背景透明效果

dialog.setCancelable(false);

dialog.setContentView(contentView);

return dialog;

}

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