Question

您好我正在创建一个外部jar文件，这是一个用于重塑文本视图的库，这里是重塑类：

public class Reshaper extends Activity{
    public static Context co;

    public static void ReshapeTextview(TextView Textview, String fontpath) {
        Typeface tf = Typeface.createFromAsset(co.getAssets(), fontpath);
        Textview.setTypeface(tf);
        PersianReshape.reshape(Textview.getText().toString());
    }

以下是我在其他项目中使用它的方法，我在那里导入了那个jar。

public class Main extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        TextView tv = (TextView) findViewById(R.id.textView1);
        Reshaper.ReshapeTextview(tv, "title.TTF");

    }

但是当我发动它时，我有一个力量关闭！

这是日志：

11-29 19:13:48.637: E/AndroidRuntime(1218): Uncaught handler: thread main exiting due to uncaught exception
11-29 19:13:48.678: E/AndroidRuntime(1218): java.lang.NoClassDefFoundError: mr.persian.reshape.Reshaper
11-29 19:13:48.678: E/AndroidRuntime(1218):     at com.example.mm.Main.onCreate(Main.java:15)
11-29 19:13:48.678: E/AndroidRuntime(1218):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
11-29 19:13:48.678: E/AndroidRuntime(1218):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2459)
11-29 19:13:48.678: E/AndroidRuntime(1218):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)
11-29 19:13:48.678: E/AndroidRuntime(1218):     at android.app.ActivityThread.access$2200(ActivityThread.java:119)
11-29 19:13:48.678: E/AndroidRuntime(1218):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863)
11-29 19:13:48.678: E/AndroidRuntime(1218):     at android.os.Handler.dispatchMessage(Handler.java:99)
11-29 19:13:48.678: E/AndroidRuntime(1218):     at android.os.Looper.loop(Looper.java:123)
11-29 19:13:48.678: E/AndroidRuntime(1218):     at android.app.ActivityThread.main(ActivityThread.java:4363)
11-29 19:13:48.678: E/AndroidRuntime(1218):     at java.lang.reflect.Method.invokeNative(Native Method)
11-29 19:13:48.678: E/AndroidRuntime(1218):     at java.lang.reflect.Method.invoke(Method.java:521)
11-29 19:13:48.678: E/AndroidRuntime(1218):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
11-29 19:13:48.678: E/AndroidRuntime(1218):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
11-29 19:13:48.678: E/AndroidRuntime(1218):     at dalvik.system.NativeStart.main(Native Method)

Answer 1

不要扩展任何内容并在静态方法中接受Context作为参数。

您可以执行以下操作：

public class Reshaper {
    public static void ReshapeTextview(TextView Textview, String fontpath) {
        Context co = Textview.getContext();
        ReshapeTextview(Textview, fontpath, co);
    }

    // If the Context returned is not the correct one, you can accept a context as a parameter:
    public static void ReshapeTextview(TextView Textview, String fontpath, Context co) {
        Typeface tf = Typeface.createFromAsset(co.getAssets(), fontpath);
        Textview.setTypeface(tf);
        PersianReshape.reshape(Textview.getText().toString());
    }
}

就您看到的错误而言，注释是正确的，因为找不到类Reshaper，这意味着它不在类路径中。

我的实用程序类应该扩展什么？

1 个答案: