问题
The question says it all. Imagine there are 2 activity's, 'Activity A' and 'Activity B'.'Activity A' holds a checkbox when its checked a button should show on 'Activity B' when its unchecked the button should hide on 'Activity B'
below is the main activity
public class MainActivity extends ActionBarActivity {
private BubblesManager bubblesManager;
private boolean isCheckedValue;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initializeBubblesManager();
final Button add = (Button) findViewById(R.id.add);
add.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
addNewBubble();
add.setEnabled(false);
}
});
CheckBox checkBox = (CheckBox)findViewById(R.id.add_fb);
checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
isCheckedValue = isChecked;
Intent intent = new Intent(MainActivity.this, PopUpWindow.class);
intent.putExtra("yourBoolName", isCheckedValue );
}
});
}
private void addNewBubble() {
BubbleLayout bubbleView = (BubbleLayout)LayoutInflater.from(MainActivity.this).inflate(R.layout.bubble_layout, null);
bubbleView.setOnBubbleRemoveListener(new BubbleLayout.OnBubbleRemoveListener() {
@Override
public void onBubbleRemoved(BubbleLayout bubble) {
finish();
System.exit(0);
}
});
bubbleView.setOnBubbleClickListener(new BubbleLayout.OnBubbleClickListener() {
@Override
public void onBubbleClick(BubbleLayout bubble) {
Intent in = new Intent(MainActivity.this, PopUpWindow.class);
startActivity(in);
}
});
bubbleView.setShouldStickToWall(true);
bubblesManager.addBubble(bubbleView, 60, 20);
}
Below is the next activity aka 'activity B'
public class PopUpWindow extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_pop_up_window);
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
int width = dm.widthPixels;
int height = dm.heightPixels;
getWindow().setLayout((int)(width*.8),(int)(height*.6));
Boolean yourBool = getIntent().getBooleanExtra("yourBoolName",false);
Button fbbutton1 = (Button)findViewById(R.id.fbbutton1);
if(yourBool){
//For Displaying Button
fbbutton1.setVisibility(View.VISIBLE);
}
}
Below is the XML code for the button I want show when checkbox is clicked
<Button
android:visibility="gone"
android:id="@+id/fbbutton1"
android:onClick="button"
android:background="@drawable/fbcircle"
android:layout_width="50dp"
android:layout_height="50dp" />
回答1:
public class MainActivity extends ActionBarActivity {
private BubblesManager bubblesManager;
private boolean isCheckedValue;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initializeBubblesManager();
final Button add = (Button) findViewById(R.id.add);
add.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
addNewBubble();
add.setEnabled(false);
}
});
CheckBox checkBox = (CheckBox)findViewById(R.id.add_fb);
checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
isCheckedValue = isChecked;
// un-comment this code if you want to go to second activity when check change
//
// Intent intent = new Intent(MainActivity.this, PopUpWindow.class);
// intent.putExtra("yourBoolName", isCheckedValue );
// startActivity(intent);
}
});
}
private void addNewBubble() {
BubbleLayout bubbleView = (BubbleLayout)LayoutInflater.from(MainActivity.this).inflate(R.layout.bubble_layout, null);
bubbleView.setOnBubbleRemoveListener(new BubbleLayout.OnBubbleRemoveListener() {
@Override
public void onBubbleRemoved(BubbleLayout bubble) {
finish();
System.exit(0);
}
});
bubbleView.setOnBubbleClickListener(new BubbleLayout.OnBubbleClickListener() {
@Override
public void onBubbleClick(BubbleLayout bubble) {
Intent in = new Intent(MainActivity.this, PopUpWindow.class);
in.putExtra("yourBoolName", isCheckedValue );
startActivity(in);
}
});
bubbleView.setShouldStickToWall(true);
bubblesManager.addBubble(bubbleView, 60, 20);
}
}
public class PopUpWindow extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_pop_up_window);
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
int width = dm.widthPixels;
int height = dm.heightPixels;
getWindow().setLayout((int)(width*.8),(int)(height*.6));
Boolean yourBool = getIntent().getBooleanExtra("yourBoolName",false);
Button fbbutton1 = (Button)findViewById(R.id.fbbutton1);
if(yourBool){
//For Displaying Button
fbbutton1.setVisibility(View.VISIBLE);
}
}
}
回答2:
send boolean value with intent bundle in activity B. if it is true show button or hide it.
//global value
private boolean isCheckedValue;
CheckBox checkBox = (CheckBox)findViewById(R.id.chkbox1);
checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
isCheckedValue = isChecked; //first set value then assign to boolean extra.
Intent intent = new Intent(MainActivity.this, PopUpWindow.class);
intent.putExtra("yourBoolName", isCheckedValue );
startActivity(intent);
}
});
}
send with intent
Intent intent = new Intent(this, AcitivityB.class);
intent.putExtra("yourBoolName", isCheckedValue );
startActivity(intent)
handle that on Acitivity B
Boolean yourBool = getIntent().getExtras().getBoolean("yourBoolName");
if(yourBool){
//display button
}
else{
//hide button
}
回答3:
Change your Activity 'A' Like this :
public class MainActivity extends ActionBarActivity {
private BubblesManager bubblesManager;
private boolean isCheckedValue;
private Intent intent;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initializeBubblesManager();
final Button add = (Button) findViewById(R.id.add);
add.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
addNewBubble();
add.setEnabled(false);
}
});
intent = new Intent(MainActivity.this, PopUpWindow.class);
CheckBox checkBox = (CheckBox)findViewById(R.id.add_fb);
checkBox.setOnCheckedChangeListener (newCompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
isCheckedValue = isChecked;
intent.putExtra("yourBoolName", isCheckedValue );
}
});
}
private void addNewBubble() {
BubbleLayout bubbleView = (BubbleLayout)LayoutInflater.from(MainActivity.this).inflate(R.layout.bubble_layout, null);
bubbleView.setOnBubbleRemoveListener(new BubbleLayout.OnBubbleRemoveListener() {
@Override
public void onBubbleRemoved(BubbleLayout bubble) {
finish();
System.exit(0);
}
});
bubbleView.setOnBubbleClickListener(new BubbleLayout.OnBubbleClickListener() {
@Override
public void onBubbleClick(BubbleLayout bubble) {
startActivity(intent);
}
});
bubbleView.setShouldStickToWall(true);
bubblesManager.addBubble(bubbleView, 60, 20);
}
And get bundle extra value in Activity 'B'
boolean checkedStatus= getIntent().getBooleanExtra("yourBoolName",false);
if(checkedStatus){
// Do your job here
}else{
}
回答4:
Use boolean isChecked of 'Activity A' in that save state of checkbox, pass it on 'Activity B', By using that boolean set visibility to your view in 'Activity B'.
来源：https://stackoverflow.com/questions/38932441/android-checkbox-checked-in-one-activity-and-then-button-appears-in-another-acti