-1
當我直接從一個字符串向另一個活動傳遞值時，它可以工作。但是，如果我從EditText和Spinner中檢索相同的值，然後單擊一個按鈕（啓動新的活動），該應用程序將崩潰。將Spinner/EditText中的值從一個活動傳遞到另一個活動
有了這個我的應用程序的工作原理：
String key;
String para;
Button btnViewProducts;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main_screen);
//StrictMode.enableDefaults();
// Buttons
btnViewProducts = (Button) findViewById(R.id.btnViewProducts);
key = "kq";
para = "Taxi_No";
// View products click event
btnViewProducts.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
// Launching All products Activity
Intent i = new Intent(getApplicationContext(), AllProductsActivity.class);
i.putExtra("keyval", key);
i.putExtra("paraval",para);
startActivity(i);
}
});
// View products click event
}
}
但是，這並不工作：
這是我LogCat輸出：
04-25 00:58:31.634: W/ResourceType(335): Skipping entry 0x7f040003 in package table 0 because it is not complex!
04-25 00:58:31.644: W/dalvikvm(335): threadid=1: thread exiting with uncaught exception (group=0x40015560)
04-25 00:58:31.695: E/AndroidRuntime(335): FATAL EXCEPTION: main
04-25 00:58:31.695: E/AndroidRuntime(335): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.androidhive/com.example.androidhive.MainScreenActivity}: android.view.InflateException: Binary XML file line #10: Error inflating class android.widget.Spinner
04-25 00:58:31.695: E/AndroidRuntime(335): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
04-25 00:58:31.695: E/AndroidRuntime(335): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
04-25 00:58:31.695: E/AndroidRuntime(335): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
04-25 00:58:31.695: E/AndroidRuntime(335): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
04-25 00:58:31.695: E/AndroidRuntime(335): at android.os.Handler.dispatchMessage(Handler.java:99)
04-25 00:58:31.695: E/AndroidRuntime(335): at android.os.Looper.loop(Looper.java:123)
04-25 00:58:31.695: E/AndroidRuntime(335): at android.app.ActivityThread.main(ActivityThread.java:3683)
04-25 00:58:31.695: E/AndroidRuntime(335): at java.lang.reflect.Method.invokeNative(Native Method)
04-25 00:58:31.695: E/AndroidRuntime(335): at java.lang.reflect.Method.invoke(Method.java:507)
04-25 00:58:31.695: E/AndroidRuntime(335): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
04-25 00:58:31.695: E/AndroidRuntime(335): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
04-25 00:58:31.695: E/AndroidRuntime(335): at dalvik.system.NativeStart.main(Native Method)
04-25 00:58:31.695: E/AndroidRuntime(335): Caused by: android.view.InflateException: Binary XML file line #10: Error inflating class android.widget.Spinner
04-25 00:58:31.695: E/AndroidRuntime(335): at android.view.LayoutInflater.createView(LayoutInflater.java:518)
04-25 00:58:31.695: E/AndroidRuntime(335): at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56)
04-25 00:58:31.695: E/AndroidRuntime(335): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:568)
04-25 00:58:31.695: E/AndroidRuntime(335): at android.view.LayoutInflater.rInflate(LayoutInflater.java:623)
04-25 00:58:31.695: E/AndroidRuntime(335): at android.view.LayoutInflater.inflate(LayoutInflater.java:408)
04-25 00:58:31.695: E/AndroidRuntime(335): at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
04-25 00:58:31.695: E/AndroidRuntime(335): at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
04-25 00:58:31.695: E/AndroidRuntime(335): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:207)
04-25 00:58:31.695: E/AndroidRuntime(335): at android.app.Activity.setContentView(Activity.java:1657)
04-25 00:58:31.695: E/AndroidRuntime(335): at com.example.androidhive.MainScreenActivity.onCreate(MainScreenActivity.java:30)
04-25 00:58:31.695: E/AndroidRuntime(335): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
04-25 00:58:31.695: E/AndroidRuntime(335): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
04-25 00:58:31.695: E/AndroidRuntime(335): ... 11 more
04-25 00:58:31.695: E/AndroidRuntime(335): Caused by: java.lang.reflect.InvocationTargetException
04-25 00:58:31.695: E/AndroidRuntime(335): at java.lang.reflect.Constructor.constructNative(Native Method)
04-25 00:58:31.695: E/AndroidRuntime(335): at java.lang.reflect.Constructor.newInstance(Constructor.java:415)
04-25 00:58:31.695: E/AndroidRuntime(335): at android.view.LayoutInflater.createView(LayoutInflater.java:505)
04-25 00:58:31.695: E/AndroidRuntime(335): ... 22 more
04-25 00:58:31.695: E/AndroidRuntime(335): Caused by: java.lang.NullPointerException
04-25 00:58:31.695: E/AndroidRuntime(335): at android.content.res.AssetManager.getResourceTextArray(AssetManager.java:214)
04-25 00:58:31.695: E/AndroidRuntime(335): at android.content.res.Resources.getTextArray(Resources.java:361)
04-25 00:58:31.695: E/AndroidRuntime(335): at android.content.res.TypedArray.getTextArray(TypedArray.java:628)
04-25 00:58:31.695: E/AndroidRuntime(335): at android.widget.AbsSpinner.<init>(AbsSpinner.java:73)
04-25 00:58:31.695: E/AndroidRuntime(335): at android.widget.Spinner.<init>(Spinner.java:56)
04-25 00:58:31.695: E/AndroidRuntime(335): at android.widget.Spinner.<init>(Spinner.java:52)
04-25 00:58:31.695: E/AndroidRuntime(335): ... 25 more
我一定要得到這些參數從文本字段和微調器中選擇值。代碼需要做什麼修改？
後logcat。我看到了幾件可能給你帶來麻煩的事情 – codeMagic 2013-04-24 19:12:44
@codeMagic：我一直在嘗試幾個小時。請你指出你檢測到的故障嗎？我將對象實例創建代碼更改爲：spin =（Spinner）findViewById（R.id.spinpara）; keyw =（EditText）findViewById（R.id.kser）;謝謝 – Dipak 2013-04-24 19:23:54
如果你發佈logcat，我肯定會。我只能假設沒有看到是什麼導致異常。我也想知道'i.putExtras（b）'中的'b'是什麼;'我認爲它是一個'Bundle'，但是它在任何地方聲明？ – codeMagic 2013-04-24 19:25:25