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OnClickListener4Ways.java
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77 lines (74 loc) · 2.41 KB
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// #option 1
public class AwesomeButtonActivity extends AppCompatActivity {
private Button awesomeButton;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
awesomeButton = new Button(this);
awesomeButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
awesomeButtonClicked();
}
});
}
private void awesomeButtonClicked() {
awesomeButton.setText("AWESOME!");
}
}
// #option 2
public class AwesomeButtonActivity extends AppCompatActivity {
private Button awesomeButton;
private View.OnClickListener awesomeOnClickListener = new View.OnClickListener() {
@Override
public void onClick(View v) {
awesomeButtonClicked();
}
};
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
awesomeButton = new Button(this);
awesomeButton.setOnClickListener(awesomeOnClickListener);
}
private void awesomeButtonClicked() {
awesomeButton.setText("AWESOME!");
}
}
// #option 3
public class AwesomeButtonActivity extends AppCompatActivity {
private Button awesomeButton;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
awesomeButton = new Button(this);
awesomeButton.setOnClickListener(new AwesomeButtonClick());
}
private void awesomeButtonClicked() {
awesomeButton.setText("AWESOME!");
}
class AwesomeButtonClick implements View.OnClickListener {
@Override
public void onClick(View v) {
awesomeButtonClicked();
}
}
}
// #option 4
public class AwesomeButtonActivity extends AppCompatActivity implements View.OnClickListener {
private Button awesomeButton;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
awesomeButton = new Button(this);
awesomeButton.setOnClickListener(this);
}
@Override
public void onClick(View v) {
awesomeButtonClicked();
}
private void awesomeButtonClicked() {
awesomeButton.setText("AWESOME!");
}
}
// ref: https://hackernoon.com/4-ways-to-implement-onclicklistener-on-android-9b956cbd2928