我想将用户输入的名称和号码传递给我的Android应用程序中的FakeRinger类。我在putExtra()的意图中使用了fab.setOnClickListener方法。这是我在MainActivity中使用的代码
public class MainActivity extends AppCompatActivity {
public static final String LOG_TAG = "MainActivity";
ImageView imageView;
EditText number, name;
Button setTimeButton;
FloatingActionButton fab;
Calendar calendar;
long selectedTimeInMillis;
TimePickerDialog timePicker;
String enteredName, enteredNumber;
Intent intent;
private static final int SELECT_IMAGE = 100;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
PreferenceManager.setDefaultValues(this, R.xml.settings, false);
imageView = findViewById(R.id.image_view);
setTimeButton = findViewById(R.id.set_time);
fab = findViewById(R.id.floatingActionButton);
number = findViewById(R.id.number);
name = findViewById(R.id.name);
enteredName = name.getText().toString().trim();
enteredNumber = number.getText().toString().trim();
imageView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent galleryIntent = new Intent(Intent.ACTION_PICK);
galleryIntent.setType("image/*");
startActivityForResult(galleryIntent, SELECT_IMAGE);
}
});
setTimeButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
calendar = Calendar.getInstance();
int hour = calendar.get(Calendar.HOUR_OF_DAY);
int minute = calendar.get(Calendar.MINUTE);
timePicker = new TimePickerDialog(MainActivity.this, new TimePickerDialog.OnTimeSetListener() {
@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
calendar.set(Calendar.HOUR_OF_DAY, hourOfDay);
calendar.set(Calendar.MINUTE, minute);
calendar.set(Calendar.SECOND, 0);
calendar.set(Calendar.MILLISECOND, 0);
selectedTimeInMillis = calendar.getTimeInMillis();
if (hourOfDay > 12) {
hourOfDay = hourOfDay - 12;
}
if (minute < 10) {
String minuteStr = "0" + String.valueOf(minute);
minute = Integer.parseInt(minuteStr);
Log.v(LOG_TAG, "minute is :" + minute);
}
Toast.makeText(MainActivity.this, hourOfDay + ":" + minute, Toast.LENGTH_SHORT).show();
Log.v(LOG_TAG, "Selected time in millis:" + selectedTimeInMillis);
}
}, hour, minute, false);
timePicker.show();
}
});
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
intent = new Intent(MainActivity.this, AlarmReciever.class);
intent.putExtra("FAKE_NAME", enteredName);
intent.putExtra("FAKE_NUMBER", enteredNumber);
PendingIntent pi = PendingIntent.getBroadcast(getApplicationContext(), 0, intent, 0);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
if (alarmManager != null) {
alarmManager.set(AlarmManager.RTC_WAKEUP, selectedTimeInMillis, pi);
Toast.makeText(MainActivity.this, "Your call has been placed", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(MainActivity.this, "Error: something wrong", Toast.LENGTH_SHORT).show();
}
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.settings:
Intent intent = new Intent(MainActivity.this, SettingsActivity.class);
startActivity(intent);
return true;
case R.id.quick_call:
return true;
default:
return super.onOptionsItemSelected(item);
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK) {
try {
Uri imageUri = data.getData();
InputStream imageStream = null;
if (imageUri != null) {
imageStream = getContentResolver().openInputStream(imageUri);
}
Bitmap selectedImage = BitmapFactory.decodeStream(imageStream);
imageView.setImageBitmap(selectedImage);
} catch (FileNotFoundException e) {
e.printStackTrace();
Toast.makeText(this, "Something went wrong", Toast.LENGTH_SHORT).show();
}
} else {
Toast.makeText(this, "You haven't picked Image", Toast.LENGTH_SHORT).show();
}
}
}
这是我的BroadcastReceiver课程
public class AlarmReciever extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
String getFakeName = intent.getStringExtra("FAKE_NAME");
String getFakeNumber = intent.getStringExtra("FAKE_NUMBER");
Intent fakeRinger = new Intent();
fakeRinger.setClassName("com.example.mani.fakecall", "com.example.mani.fakecall.FakeRinger");
fakeRinger.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
fakeRinger.putExtra("USER_FAKE_NAME", getFakeName);
fakeRinger.putExtra("USER_FAKE_NUMBER", getFakeNumber);
context.startActivity(fakeRinger);
Log.v("Yes, we are in", "Alarm reciever");
Log.v("fake name is: ", getFakeName);
Log.v("fake number is: ", getFakeNumber);
}
}
这是我的FakeRinger活动
public class FakeRinger extends AppCompatActivity {
TextView displayName;
TextView displayNumber;
Button alarmOffButton;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fake_ringer);
displayName = findViewById(R.id.display_name);
displayNumber = findViewById(R.id.display_number);
String callName = getFakeName();
String callNumber = getFakeNumber();
displayName.setText(callName);
displayNumber.setText(callNumber);
alarmOffButton = findViewById(R.id.alarm_off);
alarmOffButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
}
});
}
private String getFakeName(){
String contactName = null;
Intent i = getIntent();
Bundle bundle = i.getExtras();
if (bundle != null) {
contactName = bundle.getString("USER_FAKE_NAME");
}
return contactName;
}
private String getFakeNumber(){
String contactNumber = null;
Intent i = getIntent();
Bundle bundle = i.getExtras();
if (bundle != null) {
contactNumber = bundle.getString("USER_FAKE_NUMBER");
}
return contactNumber;
}
}
我仍然无法在FakeRinger活动中显示用户输入的名称和号码。谁能告诉我我做错了什么？
您需要将这两行移动到FAB单击侦听器中
enteredName = name.getText().toString().trim();
enteredNumber = number.getText().toString().trim();
你当前拥有它们的地方，布局是空的，你永远不会将这些字符串分配给其他任何东西。
如果你没有看到来自AlarmReciever的日志，那么无论如何都没有传递给下一个活动