LineageOS/android_development
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Update API demos to use new Fragment features.

Browse Source 
In particular, use the new argument Bundle for passing runtime
data to fragments.  Simplifies the code some.

Change-Id: I248bfa0bf94b1599926038174baa4c7387ed8ba1
This commit is contained in:
Dianne Hackborn
2010-08-12 16:23:45 -07:00
parent 3a25903743
commit b880eb4260
2 changed files with 55 additions and 51 deletions
Download Patch File Download Diff File Expand all files Collapse all files

68
samples/ApiDemos/src/com/example/android/apis/app/FragmentDialog.java
View File

@@ -65,35 +65,22 @@ public class FragmentDialog extends Activity {
void showDialog() {
mStackLevel++;
DialogFragment newFragment = new MyDialogFragment(mStackLevel);
// DialogFragment.show() will take care of adding the fragment
// in a transaction. We also want to remove any currently showing
// dialog, so make our own transaction and take care of that here.
FragmentTransaction ft = openFragmentTransaction();
Fragment prev = findFragmentByTag("dialog");
if (prev != null) {
ft.remove(prev);
}
ft.addToBackStack(null);
// Create and show the dialog.
DialogFragment newFragment = MyDialogFragment.newInstance(mStackLevel);
newFragment.show(this, ft, "dialog");
}
static int getStyleForNum(int num) {
switch ((num-1)%6) {
case 1: return DialogFragment.STYLE_NO_TITLE;
case 2: return DialogFragment.STYLE_NO_FRAME;
case 3: return DialogFragment.STYLE_NO_INPUT;
case 4: return DialogFragment.STYLE_NORMAL;
case 5: return DialogFragment.STYLE_NORMAL;
}
return DialogFragment.STYLE_NORMAL;
}
static int getThemeForNum(int num) {
switch ((num-1)%6) {
case 4: return android.R.style.Theme_Light;
case 5: return android.R.style.Theme;
}
return 0;
}
static String getNameForNum(int num) {
switch ((num-1)%6) {
case 1: return "STYLE_NO_TITLE";
@@ -109,27 +96,40 @@ public class FragmentDialog extends Activity {
public static class MyDialogFragment extends DialogFragment {
int mNum;
public MyDialogFragment() {
mNum = -1;
}
/**
* Create a new instance of MyDialogFragment, providing "num"
* as an argument.
*/
static MyDialogFragment newInstance(int num) {
MyDialogFragment f = new MyDialogFragment();
public MyDialogFragment(int num) {
super(getStyleForNum(num), getThemeForNum(num));
mNum = num;
// Supply num input as an argument.
Bundle args = new Bundle();
args.putInt("num", num);
f.setArguments(args);
return f;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (savedInstanceState != null) {
mNum = savedInstanceState.getInt("num");
}
}
mNum = getArguments().getInt("num");
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putInt("num", mNum);
// Pick a style based on the num.
int style = DialogFragment.STYLE_NORMAL, theme = 0;
switch ((mNum-1)%6) {
case 1: style = DialogFragment.STYLE_NO_TITLE; break;
case 2: style = DialogFragment.STYLE_NO_FRAME; break;
case 3: style = DialogFragment.STYLE_NO_INPUT; break;
case 4: style = DialogFragment.STYLE_NORMAL; break;
case 5: style = DialogFragment.STYLE_NORMAL; break;
}
switch ((mNum-1)%6) {
case 4: theme = android.R.style.Theme_Light; break;
case 5: theme = android.R.style.Theme; break;
}
setStyle(style, theme);
}
@Override

36
samples/ApiDemos/src/com/example/android/apis/app/FragmentStack.java
View File

@@ -47,7 +47,7 @@ public class FragmentStack extends Activity {
if (savedInstanceState == null) {
// Do first time initialization -- add initial fragment.
Fragment newFragment = new CountingFragment(mStackLevel);
Fragment newFragment = CountingFragment.newInstance(mStackLevel);
FragmentTransaction ft = openFragmentTransaction();
ft.add(R.id.simple_fragment, newFragment).commit();
} else {
@@ -63,7 +63,12 @@ public class FragmentStack extends Activity {
void addFragmentToStack() {
mStackLevel++;
Fragment newFragment = new CountingFragment(mStackLevel);
// Instantiate a new fragment.
Fragment newFragment = CountingFragment.newInstance(mStackLevel);
// Add the fragment to the activity, pushing this transaction
// on to the back stack.
FragmentTransaction ft = openFragmentTransaction();
ft.replace(R.id.simple_fragment, newFragment);
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
@@ -74,26 +79,25 @@ public class FragmentStack extends Activity {
public static class CountingFragment extends Fragment {
int mNum;
public CountingFragment() {
mNum = -1;
}
/**
* Create a new instance of CountingFragment, providing "num"
* as an argument.
*/
static CountingFragment newInstance(int num) {
CountingFragment f = new CountingFragment();
public CountingFragment(int num) {
mNum = num;
// Supply num input as an argument.
Bundle args = new Bundle();
args.putInt("num", num);
f.setArguments(args);
return f;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (savedInstanceState != null) {
mNum = savedInstanceState.getInt("num");
}
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putInt("num", mNum);
mNum = getArguments().getInt("num");
}
@Override