【发布时间】：2017-06-04 00:54:46
【问题描述】：
我使用this library 作为进度指示器，同时通过网络服务进行后台工作。我想在显示进度条时使背景透明。有什么方法可以像使用进度对话框一样以编程方式使窗口透明？
public class MainActivity extends AppCompatActivity{
private EditText email, pass;
private SessionManager session;
private SQLiteHandler db;
private AVLoadingIndicatorView pb;
private static final String LOGIN = "http://ubooktoday.com/android/login";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
email = (EditText)findViewById(R.id.et1);
pass = (EditText)findViewById(R.id.et2);
session = new SessionManager(getApplicationContext());
db = new SQLiteHandler(getApplicationContext());
pb = new AVLoadingIndicatorView(this);
if (session.isLoggedIn()) {
startActivity(new Intent(MainActivity.this, ListVActivity.class));
finish();
}
}
public void login(View view){
if (!email.getText().toString().equals("") && !pass.getText().toString().equals("")) {
loginRequest();
}else{
Toast.makeText(getApplicationContext(), "Please enter the details", Toast.LENGTH_SHORT).show();
}
}
private void loginRequest() {
startAnim();
StringRequest stringRequest = new StringRequest(Request.Method.POST, LOGIN,
new Response.Listener<String>() {
@Override
public void onResponse(String response) {
stopAnim();
try {
JSONObject jObj = new JSONObject(response);
String status = jObj.getString("status");
// Now check status value
if (status.equals("0")) {
Toast.makeText(getApplicationContext(), jObj.getString("message"), Toast.LENGTH_LONG).show();
} else if (status.equals("1")) {
session.setLogin(true);
db.addUser(jObj.getString("spa_name"), jObj.getString("user_id"));
startActivity(new Intent(MainActivity.this, ListVActivity.class));
finish();
}
} catch (JSONException e) {
// JSON error
e.printStackTrace();
Toast.makeText(getApplicationContext(), "Json error: " + e.getMessage(), Toast.LENGTH_LONG).show();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(getApplicationContext(), "VolleyError" + error.toString(), Toast.LENGTH_LONG).show();
}
}) {
@Override
protected Map<String, String> getParams() {
Map<String, String> params = new HashMap<String, String>();
params.put("email", email.getText().toString());
params.put("pass", pass.getText().toString());
return params;
}
};
RequestQueue requestQueue = Volley.newRequestQueue(getApplicationContext());
requestQueue.add(stringRequest);
}
public void startAnim(){
findViewById(R.id.avloadingIndicatorView).setVisibility(View.VISIBLE);
}
public void stopAnim(){
findViewById(R.id.avloadingIndicatorView).setVisibility(View.GONE);
}
}【问题讨论】：
标签： android android-progressbar