在我的应用中我不能重用我已经在ArabicUtility
类中声明的方法。我想要做的是用Arabicutility
来安排一个阿拉伯语的文本。因此,我需要做的是给已经在Arabicutility
类中声明的方法传递字符串并进行转换
我想这个在面向对象中是有一些困难的,所以希望能有人帮我改一下。
这个是我在Arabicutility
类中加的方法
public void addTranslate(int rid, TextView txt1) {
String textv = getResources().getString(rid);
txt1.setText(ArabicUtilities.reshapeSentence(textv));
// Typeface typeFace=Typeface.createFromAsset(getAssets(),"fonts/DroidNaskhBold.ttf");
// txt1.setTypeface(typeFace);
}
因为getResources()
是非静态的,所以我不能将这个方法声明成静态的。因为我用的是android方法,所以我不得不从Activity
中扩展。原始的它不是这么定义的。
这个就是我在其他activity类中用的上边的方法
arbic.addTranslate(R.string.butt18title1, txt1);
arbic.addTranslate(R.string.butt18desc1, txt2);but When I run the programe it crashes when I go to above activities.
这个是 log cat
12-29 10:02:32.561: E/AndroidRuntime(951): FATAL EXCEPTION: main
12-29 10:02:32.561: E/AndroidRuntime(951): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.xxxx.xxx/com.xxxx.xxx.ShowMessageActivity}: java.lang.NullPointerException
12-29 10:02:32.561: E/AndroidRuntime(951): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059)
12-29 10:02:32.561: E/AndroidRuntime(951): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
12-29 10:02:32.561: E/AndroidRuntime(951): at android.app.ActivityThread.access$600(ActivityThread.java:130)
12-29 10:02:32.561: E/AndroidRuntime(951): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
12-29 10:02:32.561: E/AndroidRuntime(951): at android.os.Handler.dispatchMessage(Handler.java:99)
12-29 10:02:32.561: E/AndroidRuntime(951): at android.os.Looper.loop(Looper.java:137)
12-29 10:02:32.561: E/AndroidRuntime(951): at android.app.ActivityThread.main(ActivityThread.java:4745)
12-29 10:02:32.561: E/AndroidRuntime(951): at java.lang.reflect.Method.invokeNative(Native Method)
12-29 10:02:32.561: E/AndroidRuntime(951): at java.lang.reflect.Method.invoke(Method.java:511)
12-29 10:02:32.561: E/AndroidRuntime(951): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
12-29 10:02:32.561: E/AndroidRuntime(951): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
12-29 10:02:32.561: E/AndroidRuntime(951): at dalvik.system.NativeStart.main(Native Method)
12-29 10:02:32.561: E/AndroidRuntime(951): Caused by: java.lang.NullPointerException
12-29 10:02:32.561: E/AndroidRuntime(951): at android.content.ContextWrapper.getResources(ContextWrapper.java:81)
12-29 10:02:32.561: E/AndroidRuntime(951): at com.xxxx.xxx.ArabicUtilities.addTranslate(ArabicUtilities.java:252)
12-29 10:02:32.561: E/AndroidRuntime(951): at com.xxxx.xxx.ShowMessageActivity.onCreate(ShowMessageActivity.java:184)
12-29 10:02:32.561: E/AndroidRuntime(951): at android.app.Activity.performCreate(Activity.java:5008)
12-29 10:02:32.561: E/AndroidRuntime(951): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
12-29 10:02:32.561: E/AndroidRuntime(951): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023)
12-29 10:02:32.561: E/AndroidRuntime(951): ... 11 more