代碼：

public class MainActivity extends AppCompatActivity {
    private static final String TAG = "LifeCycleActivity";
    private Context context = this;
    /**
     * Activity創建時被調用
     * */
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Log.i(TAG,"onCreat()");
        setContentView(R.layout.activity_main);
        TextView textView= (TextView) findViewById(R.id.tv);
        textView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startActivity(new Intent(context,Activity2.class));
            }
        });
    }


    /**
     * Activity創建或者從其他Activity返回時被調用
     * */
    @Override
    protected void onStart() {
        super.onStart();
        Log.i(TAG,"onStart()");
    }
    /**
     * 從其他Activity返回時被調用
     * 執行了onStop()方法但是沒有執行onDestroy()時再次回到Activity才會被調用
     * */
    @Override
    protected void onRestart() {
        super.onRestart();
        Log.i(TAG,"onRestart()");
    }
    /**
     * Activity創建或者從被覆蓋、后臺重新回到前臺時被調用
     * */
    @Override
    protected void onResume() {
        super.onResume();
        Log.i(TAG,"onResume()");
    }
    /**
     *Activity被覆蓋或者退出程序時被調用
     * */
    @Override
    protected void onPause() {
        super.onPause();
        Log.i(TAG,"onPause()");
    }
    /**
     * 當前Activity被覆蓋或者退出時被調用
     * */
    @Override
    protected void onStop() {
        super.onStop();
        Log.i(TAG,"onStop()");
    }
    /**
     * 退出Activity時被調用
     **/
    @Override
    protected void onDestroy() {
        super.onDestroy();
        Log.i(TAG,"onDestroy()");
    }
}

運行結果：
進入應用

image.png

跳轉到另外一個Activity

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image.png

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解鎖

image.png