具体使用方法:
btn.performClick();
例子:
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button btn = findViewById(R.id.btn1);
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(MainActivity.this, "点击按钮了", Toast.LENGTH_SHORT).show();
}
});
btn.performClick();//就这一行代码
}
}