restore savedInstanceState not match to stored - match

Question

Why do the "savedInstanceState" I use
The following problem will happen?
When the program was first runing receive right message.
But when I select video of video gallery .
In 'savedInstanceState'
The "test" to save it
But when recovery was
Equal conditions 'test'
You can not run?
And orders in
'Else if (savedInstanceState.getString (" key ")! ="test")'
Was run , while the amount of 'savedInstanceState.getString (" key ")'
is The 'test' ?
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (savedInstanceState != null) {
if (savedInstanceState.getString("key")=="test"){
TextView txtarr_1=(TextView) findViewById(R.id.test_array_1);
txtarr_1.setText("if(savedInstanceState.getString(key)==test){" + savedInstanceState.getString("key")+"}");
}
else if (savedInstanceState.getString("key")!="test") {
TextView txtarr_3=(TextView) findViewById(R.id.test_array_3);
txtarr_3.setText( savedInstanceState.getString("key"));
}
}else{
TextView txtarr_5=(TextView) findViewById(R.id.test_array_5);
txtarr_5.setText("elseif (savedInstanceState != null)");
}}
#Override
public void onSaveInstanceState(Bundle savedInstanceState) {
savedInstanceState.putString("key", "test");
super.onSaveInstanceState(savedInstanceState);
}

Answer 1

i change code to :: instead store a string -->store a integer
#SuppressLint("NewApi")
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (savedInstanceState != null) {
int val=savedInstanceState.getInt("key");
if (val==123){
TextView txtarr_1=(TextView) findViewById(R.id.test_array_1);
txtarr_1.setText("if == 123{" + savedInstanceState.getInt("key")+"}");
}
else if (val!=123) {
TextView txtarr_3=(TextView) findViewById(R.id.test_array_3);
txtarr_3.setText( savedInstanceState.getString("key"));
}
}else{
TextView txtarr_5=(TextView) findViewById(R.id.test_array_5);
txtarr_5.setText("elseif (savedInstanceState != null)");
}}
#Override
public void onSaveInstanceState(Bundle savedInstanceState) {
savedInstanceState.putInt("key", putInt);
super.onSaveInstanceState(savedInstanceState);
}
In this case the problem can be solved
that's mean :
Was detected  I store 123 and orders Equal to 123  Was conducted
but if i store 123 to form of string
run orders not equal 123 execute
in call a new activity To a stored form
and in restore The stored value is different
But when I show exactly the same text??????
why?????

Answer 2

I found my mistake
for string in IF must use equal , not ==
if (savedInstanceState != null) {
String str =savedInstanceState.getString("key");
if ( str.equals("test")){
TextView txtarr_1=(TextView) findViewById(R.id.test_array_1);
txtarr_1.setText("if == test{" + str+"}");
}
else if (!str.equals("test")){
TextView txtarr_3=(TextView) findViewById(R.id.test_array_3);
txtarr_3.setText("if != test{" + str+"}");
}
}else{
TextView txtarr_5=(TextView) findViewById(R.id.test_array_5);
txtarr_5.setText("elseif (savedInstanceState != null)");
}