【Android】控件和基本事件响应的三种方式
16lz
2021-01-23
第一种方式
package com.app;import android.os.Bundle;import android.app.Activity;import android.content.Intent;import android.view.MotionEvent;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class MainActivity extends Activity {protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Button button = (Button) findViewById(R.id.button1);button.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubIntent intent = new Intent(MainActivity.this,SecondActivity.class);startActivity(intent);}});}} 第二种方式
package com.app;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class SecondActivity extends Activity implements OnClickListener{private Button button1;@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);setContentView(R.layout.activity_welcome);button1 = (Button) findViewById(R.id.button1);button1.setOnClickListener(this);}@Overridepublic void onClick(View v) {// TODO Auto-generated method stubswitch (v.getId()) {case R.id.button1:Intent intent = new Intent();intent.setClass(SecondActivity.this, ThirdActivity.class);startActivity(intent);break;default:break;}}} 第三种方式
package com.app;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class ThirdActivity extends Activity{private Button_OnClick mbutton = new Button_OnClick();@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);setContentView(R.layout.activity_third);Button button = (Button) findViewById(R.id.button1);button.setOnClickListener(mbutton);}class Button_OnClick implements OnClickListener{@Overridepublic void onClick(View v) {// TODO Auto-generated method stubswitch (v.getId()) {case R.id.button1:Intent intent = new Intent();intent.setClass(ThirdActivity.this, MainActivity.class);startActivity(intent);break;default:break;}}}} 更多相关文章
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