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我一直在Android 4.1中引发NullPointer异常,同时在活动之间切换。任何想法为什么?Android 4.1 NullPointerException在活动之间
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_launch);
Button login = (Button)findViewById(R.id.login_button);
Button join = (Button)findViewById(R.id.join_button);
login.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent i = new Intent(LaunchActivity.this, LoginActivity.class);
startActivity(i);
}});//END OF CLICK
join.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent i = new Intent(LaunchActivity.this, JoinActivity.class);
startActivity(i);
}});//END OF CLICK
}
粘贴NullPointerException的Logcat。 –
是否发生在JoinActivity和LoginActivity? – FoamyGuy
向我们展示堆栈跟踪。几乎总是会指向确切的路线。 –