Dialog显示

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1，AlertDialog

new AlertDialog.Builder(SyncBookmarkActivity.this)
                .setTitle(getText(R.string.sync_re_download))
                .setMessage(getText(R.string.sync_isre_download))
                .setPositiveButton(确定),
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog, int which) {
                                 ......................

}
}).setNegativeButton(getText(取消), null).show();

2.ProgressDialog

//progressdialog显示

public void showSyncDialog() {
       ProgressDialog mProgressDialog = new ProgressDialog(SyncBookmarkActivity.this);
        mProgressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
        mProgressDialog.setCancelable(true);
        mProgressDialog.setOnCancelListener(new OnCancelListener() {
            @Override
            public void onCancel(DialogInterface dialog) {           //点击取消时作出的操作
             ……………………

            }
        });
        mProgressDialog.setMessage(getText(R.string.bookmark_being_synchronized).toString());    //显示的内容
        if (mProgressDialog != null && !mProgressDialog.isShowing()) {
            mProgressDialog.show();
        }
    }

//progressdialog消失

private void dismissProgressDialog() {
        if (mProgressDialog != null && mProgressDialog.isShowing()) {
            mProgressDialog.dismiss();
        }
    }