生活随笔
收集整理的这篇文章主要介绍了
Android Activity的生命周期、意图(Intent)
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package cn
.lwx
.activitycreate
;import androidx
.appcompat
.app
.AppCompatActivity
;import android
.os
.Bundle
;
import android
.util
.Log
;public class MainActivity extends AppCompatActivity {@Override protected void onCreate(Bundle savedInstanceState
) {super.onCreate(savedInstanceState
);setContentView(R
.layout
.activity_example
);Log
.i("MainActivity","调用onCreate()方法");}@Override protected void onStart() {super.onStart();Log
.i("MainActivity","调用onStart()方法");}@Override protected void onResume() {super.onResume();Log
.i("MainActivity","调用onResume()方法");}@Override protected void onPause() {super.onPause();Log
.i("MainActivity","调用onPause()方法");}@Override protected void onStop() {super.onStop();Log
.i("MainActivity","调用onStop()方法");}@Override protected void onDestroy() {super.onDestroy();Log
.i("MainActivity","调用onDestroy()方法");}@Override protected void onRestart() {super.onRestart();Log
.i("MainActivity","调用onRestart()方法");}
}
package cn
.lwx
.activitycreate
;import androidx
.appcompat
.app
.AppCompatActivity
;import android
.content
.Intent
;
import android
.os
.Bundle
;
import android
.util
.Log
;public class MainActivity extends AppCompatActivity {@Override protected void onCreate(Bundle savedInstanceState
) {super.onCreate(savedInstanceState
);setContentView(R
.layout
.activity_example
);Log
.i("MainActivity","调用onCreate()方法");Intent intent
= new Intent(this, ActivityExample
.class);startActivity(intent
);Intent intent2
= new Intent();intent
.setAction("com.lwx.main2");intent
.addCategory("android.intent.category.DEFAULT");startActivity(intent
);}
总结
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