-1
我有第二個活動處理所有用戶輸入，另一個活動處理來自第二個活動的所有數據。我想要做的是從活動中調用一個類「SubmitName」到第二個活動，這樣我就不需要再將第二個活動的值傳遞給主活動。下面是碼..調用另一個活動的類
MainActivity（凡類 「SubmitName」 位於和值被傳遞。）
public class MainActivity extends AppCompatActivity {
RecyclerView recyclerView;
TextView Name;
String lastname;
String licensenumber;
String mviolation;
String maplace;
String maddress;
String phonenumber;
String officername;
String contactnumber;
String datetime;
RecyclerView.LayoutManager layoutManager;
RecyclerAdapter adapter;
ArrayList<Violator> arrayList = new ArrayList<>();
BroadcastReceiver broadcastReceiver;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button addBtn = (Button)findViewById(R.id.btnAdd);
addBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(MainActivity.this, FragActivity.class);
startActivity(intent);
}
});
recyclerView = (RecyclerView)findViewById(R.id.recyclerView);
Name = (TextView) findViewById(R.id.tvName);
Intent intent = getIntent();
String str = intent.getStringExtra("firstname");
lastname = intent.getStringExtra("lastname");
licensenumber = intent.getStringExtra("licensenumber");
mviolation = intent.getStringExtra("violation");
maplace = intent.getStringExtra("arrestplace");
maddress = intent.getStringExtra("address");
phonenumber = intent.getStringExtra("phonenumber");
contactnumber = intent.getStringExtra("contactnumber");
officername = intent.getStringExtra("officername");
datetime = intent.getStringExtra("datetime");
Name.setText(str);
layoutManager = new LinearLayoutManager(this);
recyclerView.setLayoutManager(layoutManager);
recyclerView.setHasFixedSize(true);
adapter = new RecyclerAdapter(arrayList);
recyclerView.setAdapter(adapter);
readFromLocalStorage();
broadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
readFromLocalStorage();
}
};
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.nav_bar, menu);
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()){
case R.id.TrafficAd:
Intent i = new Intent(this, TrafficAdvisory.class);
this.startActivity(i);
break;
}
return super.onOptionsItemSelected(item);
}
public void submitName(View view)
{
String name = Name.getText().toString();
String lname = lastname;
String lnumber = licensenumber;
String violation = mviolation;
String aplace = maplace;
String address = maddress;
String pnumber = phonenumber;
String cnumber = contactnumber;
String oname = officername;
String dtime = datetime;
saveToAppServer(name,lname,lnumber,violation,aplace,address,pnumber,cnumber,oname,dtime);
Name.setText("");
}
public void readFromLocalStorage()
{
arrayList.clear();
DbHelper dbHelper = new DbHelper(this);
SQLiteDatabase database = dbHelper.getReadableDatabase();
Cursor cursor = dbHelper.readFromLocalDatabase(database);
while (cursor.moveToNext())
{
String name = cursor.getString(cursor.getColumnIndex(DBContract.NAME));
String lname = cursor.getString(cursor.getColumnIndex(DBContract.LNAME));
String lnumber = cursor.getString(cursor.getColumnIndex(DBContract.LNUMBER));
String violation = cursor.getString(cursor.getColumnIndex(DBContract.VIOLATION));
String aplace = cursor.getString(cursor.getColumnIndex(DBContract.ARRESTPLACE));
String address = cursor.getString(cursor.getColumnIndex(DBContract.ADDRESS));
String pnumber = cursor.getString(cursor.getColumnIndex(DBContract.PNUMBER));
String cnumber = cursor.getString(cursor.getColumnIndex(DBContract.CNUMBER));
String oname = cursor.getString(cursor.getColumnIndex(DBContract.ONAME));
String dtime = cursor.getString(cursor.getColumnIndex(DBContract.DTIME));
int sync_status = cursor.getInt(cursor.getColumnIndex(DBContract.SYNC_STATUS));
arrayList.add(new Violator(name,lname,lnumber,violation,aplace,address,pnumber,cnumber,oname,dtime,sync_status));
}
adapter.notifyDataSetChanged();
cursor.close();
}
public void saveToAppServer(final String name,final String lname, final String lnumber,final String violation, final String aplace,final String address, final String pnumber, final String cnumber, final String oname, final String dtime)
{
if (checkNetworkConnection())
{
StringRequest stringRequest = new StringRequest(Request.Method.POST,DBContract.SERVER_URL,
new Response.Listener<String>(){
@Override
public void onResponse(String response){
try {
JSONObject jsonObject = new JSONObject(response);
String Response = jsonObject.getString("response");
if(Response.equals("OK"))
{
saveToLocalStorage(name,lname,lnumber,violation,aplace,address,pnumber,cnumber,oname,dtime,DBContract.SYNC_STATUS_OK);
}
else
{
saveToLocalStorage(name,lname,lnumber,violation,aplace,address,pnumber,cnumber,oname,dtime,DBContract.SYNC_STATUS_FAILED);
}
} catch (JSONException e){
e.printStackTrace();
}
}
},new Response.ErrorListener(){
@Override
public void onErrorResponse(VolleyError error){
saveToLocalStorage(name,lname,lnumber,violation,aplace,address,pnumber,cnumber,oname,dtime,DBContract.SYNC_STATUS_FAILED);
}
})
{
@Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String,String> params = new HashMap<>();
params.put("name",name);
params.put("lname",lname);
params.put("lnumber",lnumber);
params.put("violation", violation);
params.put("aplace", aplace);
params.put("address",address);
params.put("pnumber",pnumber);
params.put("cnumber",cnumber);
params.put("oname",oname);
params.put("dtime",dtime);
return params;
}
}
;
MySingleton.getInstance(MainActivity.this).addToRequestQue(stringRequest);
}
else
{
saveToLocalStorage(name,lname,lnumber,violation,aplace,address,pnumber,cnumber,oname,dtime,DBContract.SYNC_STATUS_FAILED);
}
}
SecondActivity（其中輸入被處理，數據傳遞到在MainActivity）
public class ViolatorDetail extends AppCompatActivity implements View.OnClickListener{
EditText Name;
Button btnClose;
TextView DTime;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_violator_detail);
DTime = (TextView)findViewById(R.id.tvDTime);
final String currentDT = DateFormat.getDateTimeInstance().format(new Date());
DTime.setText(currentDT);
btnClose = (Button) findViewById(R.id.btnClose);
btnClose.setOnClickListener(this);
Button btnSubmit = (Button)findViewById(R.id.btnSubmit);
btnSubmit.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
EditText Name = (EditText)findViewById(R.id.etfName);
EditText LName = (EditText)findViewById(R.id.etlName);
EditText LNumber = (EditText)findViewById(R.id.etlNumber);
EditText Violation = (EditText)findViewById(R.id.etViolation);
EditText Arrestplace = (EditText)findViewById(R.id.etaPlace);
EditText Address = (EditText)findViewById(R.id.etAddress);
EditText PNumber = (EditText)findViewById(R.id.etpNumber);
EditText CNumber = (EditText)findViewById(R.id.etcNumber);
EditText OName = (EditText)findViewById(R.id.etoName);
String DT = DTime.getText().toString();
Intent intent = new Intent(ViolatorDetail.this, MainActivity.class);
intent.putExtra("firstname", Name.getText().toString());
intent.putExtra("lastname", LName.getText().toString());
intent.putExtra("licensenumber", LNumber.getText().toString());
intent.putExtra("violation", Violation.getText().toString());
intent.putExtra("arrestplace", Arrestplace.getText().toString());
intent.putExtra("address", Address.getText().toString());
intent.putExtra("phonenumber", PNumber.getText().toString());
intent.putExtra("contactnumber", CNumber.getText().toString());
intent.putExtra("officername", OName.getText().toString());
intent.putExtra("datetime", DT);
startActivity(intent);
}
});
}
}
我想要做的是調用「SUBMITNAME」類到第二個活動，以便不再進行數據傳遞。
你在做什麼/避免在這裏？ –
這是很多代碼。考慮創建一個[最小，完整和可驗證示例]（http://stackoverflow.com/help/mcve）。 –
「意圖」是從一種活動轉移到另一種活動的正確方法。大多數「經典」的java方式不能保證，對象可以交換等等... –