Creating an intent in a new method

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失恋的感觉
失恋的感觉 2021-01-06 05:43

So I want an intent to start an Activity that simply brings up a dialog popup box telling the user how to use the app.

I have the code:

private final         


        
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5条回答
  • 2021-01-06 06:07

    Change,

    Intent i = new Intent(this, About.class);
    

    to,

    Intent i = new Intent(TheCurrentClassName.this, About.class);
    
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  • 2021-01-06 06:14

    Just change

    Intent i = new Intent(this, About.class);
    

    to

    Intent i = new Intent(Classname.this, About.class);
    

    Hope it works.

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  • 2021-01-06 06:19

    The intent needs a context. However, using the this shortcut in the onClick function is not properly resolved. Different ways to provide current context in an anonymous inner class are - Use Context.this instead of this. - Use getApplicationContext() instead of this. - Explicitly use the class name MenuScreen.this. Call a function that is declared at the right context level.

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  • 2021-01-06 06:20

    The problem is that you are inside another class there and are passing the Intent a wrong context. You have to pass it the right context. Take a look at the example below.

    // your Activity
    
    public class MyActivity extends Activity {
    
        Context ctx = null;
    
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.main);
            ctx = getApplication();
        }
    
        private final View.OnClickListener btnClick = new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                switch (v.getId()) {
                case R.id.about_box:
    
                    Intent i = new Intent(ctx, About.class);
                    startActivity(i);
                    break;
                }
            }
        }
    
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  • 2021-01-06 06:26

    Change the intent line to: Intent intent = new Intent(ClassName.this, theNewClassName.class);

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