android performClick使用说明

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 performClick 是使用代码主动去调用控件的点击事件(模拟人手去触摸控件)boolean android.view.View.performClick()Call this view's OnClickListener, if it is defined.Returns:True there was an assigned OnClickListener that was called, false otherwise is returned.---------------------------------------------@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_my);btn1 = (Button) findViewById(R.id.button1);tv1 = (TextView) findViewById(R.id.textView1);btn1.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {tv1.setText("已经被点击过了");}});
btn1.performClick();
}
performClick需要写在setOnClickListener的声明后面
                                             
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