Android Cannot Resolve Constructor INTENT Causes and Solutions
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When you write the code today, I find the Android Studio prompt the following error "Android can not resolve constructor intent" code as follows
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button button = (Button) findViewById(R.id.button_1);
assert button != null;
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent startIntent = new Intent(MainActivity.this, MyService.class);
StartService (startINTENT); // Start service
}
});
}
}reason:
INTENT usage and parameters are as follows:
Intent(Context context , Class class)
In this way, in the code 1, we set the parameters to this. So why is it wrong?
This is because this is an Inner Class (inner class) (listener class is an anonymous internal class, a special internal class), then if you want to use this to reference myActivity is unable, this error Usage is equivalent to:
Intent( OnClickListener Listener ， Class class )
The first parameter is an onclickListener class, not a context class, so it is wrong.
To correct the error, correctly quote myActivity, you must:
Intent intent = new Intent(this , SecondActivity.class);
Change to:
Intent intent = new Intent( MyActivity.this , SecondActivity.class);
Later, I found other methods can also be used, as long as I get the method of context context, as follows:
Intent intent = new Intent( getApplicationContext(), SecondActivity.class);
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