Question

我在一个android项目中创建了这个点击监听器，它来自一个教程它在那里工作但是当我在我的新应用程序中尝试它时似乎不起作用。

 ImageView animals = (ImageView) findViewById(R.id.anim);

    animals.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {

            Intent animalsIntent = new Intent(MainActivity.this, animals.class);

            // Start the new activity
            startActivity(animalsIntent);
        }
    });

当我这样做时，应用程序崩溃了。这是logcat错误消息：

03-13 23:28:21.750 7734-7734/com.example.android.trollsounds E/AndroidRuntime: FATAL EXCEPTION: main
                                                                               Process: com.example.android.trollsounds, PID: 7734
                                                                               android.content.ActivityNotFoundException: Unable to find explicit activity class {com.example.android.trollsounds/com.example.android.trollsounds.animals}; have you declared this activity in your AndroidManifest.xml?
                                                                                   at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1895)
                                                                                   at android.app.Instrumentation.execStartActivity(Instrumentation.java:1589)
                                                                                   at android.app.Activity.startActivityForResult(Activity.java:4228)
                                                                                   at android.support.v4.app.BaseFragmentActivityApi16.startActivityForResult(BaseFragmentActivityApi16.java:54)
                                                                                   at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:67)
                                                                                   at android.app.Activity.startActivityForResult(Activity.java:4187)
                                                                                   at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:720)
                                                                                   at android.app.Activity.startActivity(Activity.java:4515)
                                                                                   at android.app.Activity.startActivity(Activity.java:4483)
                                                                                   at com.example.android.trollsounds.MainActivity$1.onClick(MainActivity.java:29)
                                                                                   at android.view.View.performClick(View.java:5612)
                                                                                   at android.view.View$PerformClick.run(View.java:22288)
                                                                                   at android.os.Handler.handleCallback(Handler.java:751)
                                                                                   at android.os.Handler.dispatchMessage(Handler.java:95)
                                                                                   at android.os.Looper.loop(Looper.java:154)
                                                                                   at android.app.ActivityThread.main(ActivityThread.java:6123)
                                                                                   at java.lang.reflect.Method.invoke(Native Method)
                                                                                   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
                                                                                   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:757)

Answer 1

animals.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {

        Intent animalsIntent = new Intent(MainActivity.this, animals.class);

        // Start the new activity
        startActivity(animalsIntent);
    }
});

在onClickListerner中（新的OnClickListener（），应该是新的View.OnclickListener。这应该适合你

Answer 2

在animals.setOnClickListiner中，您需要new View.OnClickListener()代替new OnClickListener()。希望有所帮助！

      ImageView animals = (ImageView) findViewById(R.id.anim);
      //Its View.OnClickListener()
       animals.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
     //Also change to this instead of GameActivity.this
            Intent animalsIntent = new Intent(this, animals.class);

        // Start the new activity
        startActivity(animalsIntent);
        }
    });

另外，将Intent animalsIntent = new Intent(MainActivity.this, animals.class);更改为Intent animalsIntent = new Intent(this, animals.class);

修改您还有一个ActivityNotFound错误，这意味着动物类存在剂量。请尝试检查名称

为什么这个onclicklistener不起作用？

2 个答案: