В моем приложении я смахиваю изображения, и мне нужно найти способ показать некоторые кнопки и стрелки, когда я нажимаю на изображение. Я использую этот код:
Edit1:
package com.stampii.stampii.cards;
import com.stampii.stampii.cards.HorizontalPager;
import com.stampii.stampii.cards.HorizontalPager.OnScreenSwitchListener;
import com.stampii.stampii.R;
import android.app.Activity;
import android.os.Bundle;
import android.view.Window;
import android.view.WindowManager;
import android.widget.ImageView;
import android.widget.LinearLayout;
public class Cards extends Activity {
public int position;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
HorizontalPager realViewSwitcher = new HorizontalPager(getApplicationContext());
ImageView img1 = new ImageView(getApplicationContext());
ImageView img2 = new ImageView(getApplicationContext());
ImageView img3 = new ImageView(getApplicationContext());
ImageView img4 = new ImageView(getApplicationContext());
ImageView img5 = new ImageView(getApplicationContext());
ImageView img6 = new ImageView(getApplicationContext());
img1.setImageResource(R.drawable.one);
img2.setImageResource(R.drawable.two);
img3.setImageResource(R.drawable.three);
img4.setImageResource(R.drawable.four);
img5.setImageResource(R.drawable.five);
img6.setImageResource(R.drawable.six);
realViewSwitcher.addView(img1);
realViewSwitcher.addView(img2);
realViewSwitcher.addView(img3);
realViewSwitcher.addView(img4);
realViewSwitcher.addView(img5);
realViewSwitcher.addView(img6);
realViewSwitcher.setOnScreenSwitchListener(new OnScreenSwitchListener(){
public void onScreenSwitched(int screen){
position = screen;
}
});
LinearLayout ll1 = (LinearLayout) findViewById(R.id.ll1);
LinearLayout ll2 = (LinearLayout) findViewById(R.id.ll2);
//add realViewSwitcher to ll1
ll1.addView(realViewSwitcher);
//Add buttons to ll2 and edit them as u want
setContentView(R.layout.cards);
}
}
И мне нужно сделать что-то вроде этого: http://www.photoswipe.com/latest/examples/jquery-mobile.html. Для отображения следующей, предыдущей кнопки со стрелкой и двух кнопок в верхней части изображения.
Исключение LogCat:
08-09 14:33:54.656: ERROR/AndroidRuntime(1562): Uncaught handler: thread main exiting due to uncaught exception
08-09 14:33:54.705: ERROR/AndroidRuntime(1562): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.stampii.stampii/com.stampii.stampii.cards.Cards}: java.lang.NullPointerException
08-09 14:33:54.705: ERROR/AndroidRuntime(1562): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2496)
08-09 14:33:54.705: ERROR/AndroidRuntime(1562): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)
08-09 14:33:54.705: ERROR/AndroidRuntime(1562): at android.app.ActivityThread.access$2200(ActivityThread.java:119)
08-09 14:33:54.705: ERROR/AndroidRuntime(1562): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863)
08-09 14:33:54.705: ERROR/AndroidRuntime(1562): at android.os.Handler.dispatchMessage(Handler.java:99)
08-09 14:33:54.705: ERROR/AndroidRuntime(1562): at android.os.Looper.loop(Looper.java:123)
08-09 14:33:54.705: ERROR/AndroidRuntime(1562): at android.app.ActivityThread.main(ActivityThread.java:4363)
08-09 14:33:54.705: ERROR/AndroidRuntime(1562): at java.lang.reflect.Method.invokeNative(Native Method)
08-09 14:33:54.705: ERROR/AndroidRuntime(1562): at java.lang.reflect.Method.invoke(Method.java:521)
08-09 14:33:54.705: ERROR/AndroidRuntime(1562): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
08-09 14:33:54.705: ERROR/AndroidRuntime(1562): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
08-09 14:33:54.705: ERROR/AndroidRuntime(1562): at dalvik.system.NativeStart.main(Native Method)
08-09 14:33:54.705: ERROR/AndroidRuntime(1562): Caused by: java.lang.NullPointerException
08-09 14:33:54.705: ERROR/AndroidRuntime(1562): at com.stampii.stampii.cards.Cards.onCreate(Cards.java:54)
08-09 14:33:54.705: ERROR/AndroidRuntime(1562): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
08-09 14:33:54.705: ERROR/AndroidRuntime(1562): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2459)
08-09 14:33:54.705: ERROR/AndroidRuntime(1562): ... 11 more