android.support.v4.view.ViewPager无法转换为android.support.v4.view.ViewPager [英] android.support.v4.view.ViewPager cannot be cast to android.support.v4.view.ViewPager

问题描述

这是我的xml代码:

<android.support.v4.view.ViewPager
    android:id="@+id/guide_pager"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" />
.................

这是我的android java代码.

and this is my android java code.

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    this.requestWindowFeature(Window.FEATURE_NO_TITLE);
    setContentView(R.layout.guide);
            // here will be crash
    mPager = (ViewPager) findViewById(R.id.guide_pager);
}

在代码中，

会抛出一个执行:android.support.v4.view.ViewPager无法转换为android.support.v4.view.ViewPager.但我的项目中只有一个support.v4.jar.谁可以帮助我?

in the code, there well be throw an execption:android.support.v4.view.ViewPager cannot be cast to android.support.v4.view.ViewPager. but only one support.v4.jar in my project. who can help me?

推荐答案

这样做...

1) Remove the `android-support-v4.jar` from your project
2) clean the project
3) copy the jar file from `yourdrive:\android-sdks\extras\android\support\v4`
4) add this library to your project

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