protected void onCreate(Bundle savedInstanceState) {
...
// 1. 创建待添加 fragment 实例
replaceFragment(fragment1);
...
}
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setTitle("Warning");
builder.setMessage("You are forced to be offline. Please try to login again.");
builder.setCancelable(false); // 设置为不可取消
builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
ActivityCollector.finishAll(); // 销毁所有的活动
Intent intent = new Intent(context , LoginActivity.class);
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