以下是创建进度对话框的示例:
第一种情况:
私有 ProgressDialog 进度对话框;
btnCircle.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
progressDialog = ProgressDialog.show(MainActivity.this,
"Loading", "Please Wait");
SporednaDretva sd = new SporednaDretva(progressDialog, false);
sd.start();
}
});
请注意,这里我有“progressDialog = ProgressDialog.show(MainActivity.this, "Loading", "Please Wait");"
第二种情况:
btnProgress.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
progressDialog = new ProgressDialog(MainActivity.this);
progressDialog.setMessage("Downloading");
progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
progressDialog.show();
SporednaDretva sd = new SporednaDretva(progressDialog, true);
sd.start();
}
});
这里我有“progressDialog = new ProgressDialog(MainActivity.this);”
问题:谁能向我解释一下这两种创建进度对话框的方法?我知道第一个对话框是圆形对话框,第二个是水平进度对话框,但是为什么在第一个示例中我有 "progressDialog = ProgressDialog.show(MainActivity.this, "Loading", "Please Wait")" 而没有 new ProgressDialog()在第二个示例中,我有新的 ProgresDialog()?