微调器的适配器使nullPointerExeption

时间:2015-09-18 22:37:39

标签: android nullpointerexception spinner android-spinner android-adapter

我在我的一个值的文件夹中创建了一个数组列表,现在当我想通过从源文件夹中检索它来调整它时,它表示nullPointerExeption:

 spinner = (Spinner) findViewById(R.id.spinner);

    ArrayAdapter adapter = ArrayAdapter.createFromResource(this,R.array.worker,android.R.layout.simple_list_item_1);
    spinner.setAdapter(adapter);
    spinner.setOnItemSelectedListener(this);

LogCat中的消息:

 Caused by: android.content.res.Resources$NotFoundException: String array resource ID #0x7f090001 at android.content.res.Resources.getStringArray(Resources.java:527) at com.example.hay.myapplication.UserCreatingActivity.onCreate(UserCreatingActivity‌​.java:46) at android.app.Activity.performCreate(Activity.java:5990) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:227

4 个答案:

答案 0 :(得分:0)

尝试给ArrayAdapter一个类型:

ArrayAdapter<String> adapter = ArrayAdapter.createFromResource(this, R.array.worker, android.R.layout.simple_spinner_item);

答案 1 :(得分:0)

尝试翻转createFromRessource中的最后两个参数:

替换:

ArrayAdapter adapter = ArrayAdapter.createFromResource(this,R.array.worker,android.R.layout.simple_list_item_1);

人:

ArrayAdapter<String> adapter = ArrayAdapter.createFromResource(this, android.R.layout.simple_list_item_1, R.array.worker);

在您的代码中:

    spinner = (Spinner) findViewById(R.id.spinner);

    ArrayAdapter<String> adapter = ArrayAdapter.createFromResource(this, android.R.layout.simple_list_item_1, R.array.worker);
    spinner.setAdapter(adapter);
    spinner.setOnItemSelectedListener(this);

答案 2 :(得分:0)

因为你有例外:

 `Caused by: android.content.res.Resources$NotFoundException: String array resource ID #0x7f090001 at 

我发现您的问题是createFromResource()方法中的最后一个值:

 ArrayAdapter adapter = ArrayAdapter.createFromResource(this,R.array.worker,android.R.layout.simple_list_item_1);

最后一个值必须是数组:

 ArrayAdapter adapter = ArrayAdapter.createFromResource(this,android.R.layout.simple_list_item_1,R.array.worker);

答案 3 :(得分:-1)

更改

 attr.xml

目录

来自

...\app\src\main\res\values-w820dp

...\app\src\main\res\values