用户单击按钮时显示ListView
我做了一个迷你冒险游戏，玩家可以去北，南，东，西等地。
现在我希望玩家保留库存，但我不知道如何制作GUI。我希望在用户点击广告资源按钮时显示ListView。
视图的代码如下。
package dev.game.adventure;
import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.*;
import android.support.annotation.Nullable;
import android.os.*;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.text.method.ScrollingMovementMethod;
import android.util.AttributeSet;
import android.view.*;
import android.widget.*;
import java.util.Collection;
import java.util.Iterator;
/**
* An adventure that shows and hides the system UI (i.e.
* status bar and navigation/system bar) with user interaction.
*/
public class AdventureActivity extends AppCompatActivity {
/**
* Whether or not the system UI should be auto-hidden after
* {@link #AUTO_HIDE_DELAY_MILLIS} milliseconds.
*/
private static final boolean AUTO_HIDE = true;
PlaceView ag;
/**
* If {@link #AUTO_HIDE} is set, the number of milliseconds to wait after
* user interaction before hiding the system UI.
*/
private static final int AUTO_HIDE_DELAY_MILLIS = 3000;
/**
* Some older devices needs a small delay between UI widget updates
* and a change of the status and navigation bar.
*/
private static final int UI_ANIMATION_DELAY = 300;
private final Handler mHideHandler = new Handler();
private View mContentView;
private final Runnable mHidePart2Runnable = new Runnable() {
@SuppressLint("InlinedApi")
@Override
public void run() {
// Delayed removal of status and navigation bar
// Note that some of these constants are new as of API 16 (Jelly Bean)
// and API 19 (KitKat). It is safe to use them, as they are inlined
// at compile-time and do nothing on earlier devices.
mContentView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE
| View.SYSTEM_UI_FLAG_FULLSCREEN
| View.SYSTEM_UI_FLAG_LAYOUT_STABLE
| View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
| View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
| View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);
}
};
private View mControlsView;
private final Runnable mShowPart2Runnable = new Runnable() {
@Override
public void run() {
// Delayed display of UI elements
ActionBar actionBar = getSupportActionBar();
if (actionBar != null) {
actionBar.show();
}
mControlsView.setVisibility(View.VISIBLE);
}
};
private boolean mVisible;
private final Runnable mHideRunnable = new Runnable() {
@Override
public void run() {
hide();
}
};
/**
* Touch listener to use for in-layout UI controls to delay hiding the
* system UI. This is to prevent the jarring behavior of controls going away
* while interacting with activity UI.
*/
private final View.OnTouchListener mDelayHideTouchListener = new View.OnTouchListener() {
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
if (AUTO_HIDE) {
delayedHide(AUTO_HIDE_DELAY_MILLIS);
}
return false;
}
};
TextView scrollable;
static final String[] FRUITS = new String[] { "Apple", "Avocado", "Banana",
"Blueberry", "Coconut", "Durian", "Guava", "Kiwifruit",
"Jackfruit", "Mango", "Olive", "Pear", "Sugar-apple" };
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fullscreen);
scrollable = (TextView) findViewById(R.id.textView1);
scrollable.setMovementMethod(new ScrollingMovementMethod());
ag = findViewById(R.id.view);
ag.text = scrollable;
ag = findViewById(R.id.view);
new Adventure(scrollable, this, ag);
Button buttonOne = (Button) findViewById(R.id.close);
buttonOne.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
ag.mainCharacter.go("North", ag.target);
ag.display("North", ag.target, ag.mainCharacter.place);
}
});
Button buttonOne2 = (Button) findViewById(R.id.close2);
buttonOne2.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
ag.mainCharacter.go("East", ag.target);
ag.display("East", ag.target, ag.mainCharacter.place);
}
});
Button buttonOne3 = (Button) findViewById(R.id.close3);
buttonOne3.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
ag.mainCharacter.go("South", ag.target);
ag.display("South", ag.target, ag.mainCharacter.place);
}
});
Button buttonOne4 = (Button) findViewById(R.id.close4);
buttonOne4.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
ag.mainCharacter.go("West", ag.target);
ag.display("West", ag.target, ag.mainCharacter.place);
}
});
Button buttonOne5 = (Button) findViewById(R.id.close5);
buttonOne5.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
ag.mainCharacter.go("Up", ag.target);
ag.display("Up", ag.target, ag.mainCharacter.place);
}
});
Button buttonOne6 = (Button) findViewById(R.id.close6);
buttonOne6.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
ag.mainCharacter.go("Down", ag.target);
ag.display("Down", ag.target, ag.mainCharacter.place);
}
});
Button buttonOne7 = (Button) findViewById(R.id.close7);
buttonOne7.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
ag.mainCharacter.say("Where is the key?", ag.target);
for (Iterator<Person> i = ag.persons.iterator(); i.hasNext();) {
Person item = i.next();
if (item instanceof WalkingPerson) {
WalkingPerson item2 = (WalkingPerson) item;
item2.query(ag.mainCharacter, ag.target);
}
}
}
});
Button buttonOne8 = (Button) findViewById(R.id.close7);
buttonOne7.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
}
});
ag.mainCharacter.goTo("Dungeon", this);
ag.display("", this, ag.mainCharacter.place);
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Trigger the initial hide() shortly after the activity has been
// created, to briefly hint to the user that UI controls
// are available.
// delayedHide(100);
}
private void toggle() {
if (mVisible) {
hide();
} else {
show();
}
}
private void hide() {
// Hide UI first
ActionBar actionBar = getSupportActionBar();
if (actionBar != null) {
actionBar.hide();
}
mControlsView.setVisibility(View.GONE);
mVisible = false;
// Schedule a runnable to remove the status and navigation bar after a delay
mHideHandler.removeCallbacks(mShowPart2Runnable);
mHideHandler.postDelayed(mHidePart2Runnable, UI_ANIMATION_DELAY);
}
@SuppressLint("InlinedApi")
private void show() {
// Show the system bar
mContentView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
| View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);
mVisible = true;
// Schedule a runnable to display UI elements after a delay
mHideHandler.removeCallbacks(mHidePart2Runnable);
mHideHandler.postDelayed(mShowPart2Runnable, UI_ANIMATION_DELAY);
}
/**
* Schedules a call to hide() in delay milliseconds, canceling any
* previously scheduled calls.
*/
private void delayedHide(int delayMillis) {
mHideHandler.removeCallbacks(mHideRunnable);
mHideHandler.postDelayed(mHideRunnable, delayMillis);
}
}
class PlaceView extends View {
public PlaceView(Context context, @Nullable AttributeSet attrs) {
super(context, attrs);
NBRSTEPS = 4;//difficulty;
heroName = "Jamie";//name;
target = (AdventureActivity) context;
this.cont = context;
x = new int[NBRSTEPS];
y = new int[NBRSTEPS];
this.target = target;
hero_positions = new int[NBRSTEPS];
int resourceIdFalling = 0;
int resourceIdHero = 0;
falling = BitmapFactory.decodeResource(getResources(), resourceIdFalling); //load a falling image
hero = BitmapFactory.decodeResource(getResources(), resourceIdHero); //load a hero image
}
public Collection<Person> getPersons() {
return persons;
}
Person mainCharacter;
public void setPersons(Collection<Person> persons) {
this.persons = persons;
}
public void display(String s1, AdventureActivity target, Place p) {
setBackground(p.image);
target.scrollable.append("This place is called " + p.getName() + ".");
if(p.getName().equals("Heaven")) {
final Toast toast = Toast.makeText(target.ag.getContext(), "GAME OVER!\n", Toast.LENGTH_LONG);// duration);
toast.show();
}
}
/**
* Persons at this Place.
*/
public Collection<Person> persons;
int NBRSTEPS; // number of discrete positions in the x-dimension; must be uneven
String heroName;
int[] x; // x-coordinates for falling objects
int[] y; // y-coordinates for falling objects
int[] hero_positions; // x-coordinates for hero
int ballW; // width of each falling object
int ballH; // height of ditto
Bitmap falling, hero;
Context cont;
TextView text;
AdventureActivity target;
// update the canvas in order to display the game action
@Override
public void onDraw(Canvas canvas) {
super.onDraw(canvas);
int xx = 200;
int yy = 0;
if (persons != null) {
synchronized (persons) {
Iterator<Person> iterate = persons.iterator();
while (iterate.hasNext()) {
Person p = iterate.next();
if (p.getImage() != 0) {
hero = BitmapFactory.decodeResource(getResources(), p.getImage()); //load a character image
// Draw the visible person's appearance
// g.drawImage(appearance, xx,
// 240 + yy - (appearance.getHeight(this) * 4) / 5,
// this);
canvas.drawBitmap(hero, xx, 0, null); //Draw the hero on the canvas.
// Draw the name
Paint paint = new Paint();
paint.setStyle(Paint.Style.FILL);
canvas.save();
// canvas.translate(100, 200);
paint.setStrokeWidth(1);
paint.setColor(Color.WHITE);
paint.setTextSize(50);
canvas.drawText(p.name, 0, 0, paint);
xx += 500;
yy = (int) (Math.random() * 20);
}
}
}
}
canvas.save(); //Save the position of the canvas.
canvas.restore();
//Call the next frame.
invalidate();
}
}
我发现ListView的所有示例都使用XML来包含ListView但是如何在按下库存按钮时显示它？
My XML layout is the following.
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/tableLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="10dip">
<TableRow
android:id="@+id/tableRow1"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<Button
android:id="@+id/close"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:minHeight="0dp"
android:minWidth="0dp"
android:layout_alignParentBottom="true"
android:layout_column="0"
android:text="@string/north" />
<Button
android:id="@+id/close2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:minHeight="0dp"
android:minWidth="0dp"
android:layout_alignParentBottom="true"
android:layout_column="1"
android:text="@string/east" />
<Button
android:id="@+id/close3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:minHeight="0dp"
android:minWidth="0dp"
android:layout_alignParentBottom="true"
android:layout_column="2"
android:text="@string/south" />
<Button
android:id="@+id/close4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:minHeight="0dp"
android:minWidth="0dp"
android:layout_alignParentBottom="true"
android:layout_column="3"
android:text="@string/west" />
<Button
android:id="@+id/close5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:minHeight="0dp"
android:minWidth="0dp"
android:layout_alignParentBottom="true"
android:layout_column="4"
android:text="@string/up" />
<Button
android:id="@+id/close6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:minHeight="0dp"
android:minWidth="0dp"
android:layout_alignParentBottom="true"
android:layout_column="5"
android:text="@string/down" />
<Button
android:id="@+id/close7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:minHeight="0dp"
android:minWidth="0dp"
android:layout_alignParentBottom="true"
android:layout_column="6"
android:text="@string/say" />
<Button
android:id="@+id/close8"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:minHeight="0dp"
android:minWidth="0dp"
android:layout_alignParentBottom="true"
android:layout_column="7"
android:text="@string/inventory" />
<Button
android:id="@+id/close9"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:minHeight="0dp"
android:minWidth="0dp"
android:layout_alignParentBottom="true"
android:layout_column="8"
android:text="@string/take" />
<Button
android:id="@+id/close10"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:minHeight="0dp"
android:minWidth="0dp"
android:layout_alignParentBottom="true"
android:layout_column="9"
android:text="@string/drop" />
</TableRow>
<TableRow
android:id="@+id/tableRow2"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_span="6"
android:layout_weight="1"
android:scrollbars="none">
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:background="#FFFFFF"
android:gravity="bottom"
android:maxLines="2"
android:scrollbars="vertical"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textColor="#000000" />
</ScrollView>
</TableRow>
<TableRow
android:id="@+id/tableRow3"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1">
<dev.game.adventure.PlaceView
android:id="@+id/view"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_span="6"
android:layout_weight="1"
android:adjustViewBounds="true"
android:background="#FFFFFF"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:paddingTop="10dp" />
</TableRow>
</TableLayout>
我从答案中尝试了以下代码，但它没有做任何事情。
ListView DynamicListView = new ListView(this);
final String[] DynamicListElements = new String[] {
"Hello",
"Hi",
"Android Studio",
"Java"
};
ArrayAdapter adapter = new ArrayAdapter (AdventureActivity.this, android.R.layout.simple_list_item_1, DynamicListElements);
DynamicListView.setAdapter(adapter);
TableRow element1 = (TableRow) findViewById(R.id.tableRow3);
element1.addView(DynamicListView);
1 个答案:
答案 0 :(得分：2)
//create a new layout or use if you have one
LinearLayout linearLayout = new LinearLayout(this);
//creating listview dynamically
ListView DynamicListView = new ListView(this);
//lit items. Hardcoded here, you can set the values dynamically using ArrayList
final String[] DynamicListElements = new String[] {"Hello","Hi","Android Studio","Java"};
如果您的活动名称与MainActivity不同，则相应地进行更改。在这个例子中，我使用了MainActivity.this
ArrayAdapter<String> adapter = new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_list_item_1, DynamicListElements);
DynamicListView.setAdapter(adapter);
linearLayout.addView(DynamicListView);
//this may not be needed if you are using exisitng layout
this.setContentView(linearLayout, new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
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