performClick

说实话，第一次听说这个玩意，
模拟点击事件

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上demo

public class MainActivity extends AppCompatActivity {    TextView tv1;    Button bt1;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        bt1 = (Button) findViewById(R.id.bt1);        tv1 = (TextView) findViewById(R.id.tv1);       bt1.setOnClickListener(new View.OnClickListener() {           @Override           public void onClick(View view) {               tv1.setText("已经被点击过了");           }       });// 模拟点击事件        bt1.performClick();    }}

挺好玩的小知识