我想在我的 Listview
中单击一个项目时,在 Toast
中显示 Selecteditemposition
( Listview
中的单击项目数(,但是此事件中的任何方法崩溃。
这是崩溃报告:
2019-06-27 20:54:02.681 13006-13015/? E/ample.basicipt: Failed to send DDMS packet REAQ to debugger (-1 of 20): Broken pipe
2019-06-27 20:54:17.470 13006-13006/com.example.basiciptv E/ample.basicipt: No package ID ff found for ID 0xffffffff.
2019-06-27 20:54:17.472 13006-13006/com.example.basiciptv E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.basiciptv, PID: 13006
android.content.res.Resources$NotFoundException: String resource ID #0xffffffff
at android.content.res.Resources.getText(Resources.java:348)
at android.widget.Toast.makeText(Toast.java:307)
at com.example.basiciptv.MainActivity$4.onItemClick(MainActivity.java:336)
at android.widget.AdapterView.performItemClick(AdapterView.java:318)
at android.widget.AbsListView.performItemClick(AbsListView.java:1192)
at android.widget.AbsListView$PerformClick.run(AbsListView.java:3169)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6692)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
这是代码:
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
boolean co = true;
int lineNumber = listview.getSelectedItemPosition();
Toast.makeText(MainActivity.this, lineNumber, Toast.LENGTH_SHORT).show();
}
});
我在做什么错?
lineNumber
是一个整数,因此您使用的是makeText()
的超载:
makeText(Context context, int resId, int duration)
期望整数字符串资源ID,因此lineNumber
被视为字符串资源ID,当然找不到它。
相反,您应该做的是将lineNumber
转换为字符串,并使用makeText()
的超载:
makeText(Context context, CharSequence text, int duration)
这样做:
Toast.makeText(MainActivity.this, String.valueOf(lineNumber), Toast.LENGTH_SHORT).show();
因此,亚麻伯已经返回了onclick方法作为位置。
Toast.maketext(getApplicationContext,position.toString(), Toast.LENGHT_LONG).show();