帮看一下为什么获取不到savedInstanceState的值

2021-04-07 07:11:08 318 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

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class MainActivity : AppCompatActivity() {

    private val tag="MainActivity"

    override fun onSaveInstanceState(outState: Bundle) {

        Log.d(tag,"onSaveInstanceState()...")

        super.onSaveInstanceState(outState) //临时保存数据

        val temdata="something str"

        outState.putString("data1",temdata)

        val temdata2=99.99

        outState.putDouble("data2",temdata2)

        val temdata3=false

        outState.putBoolean("data3",temdata3)

    }



    override fun onCreate(savedInstanceState: Bundle?) {

        super.onCreate(savedInstanceState)

        Log.d(tag,"onCreate..")

        val binding=ActivityMainBinding.inflate(layoutInflater)

        setContentView(binding.root)

        if (savedInstanceState!=null){

            Log.d(tag,"running...........")

            Log.d(tag,"str:${savedInstanceState.getString("data1")}")

            Log.d(tag,"double:${savedInstanceState.getDouble("data2")}")

            Log.d(tag,"boolean:${savedInstanceState.getBoolean("data3")}")

        }else

            Log.d(tag,"savedInstanceState is null...........")

        binding.btnShowNormal.setOnClickListener {

            val intent = Intent(this,NormalActivity::class.java)

            startActivity(intent)

        }

        binding.btnShowDialog.setOnClickListener {

            val intent = Intent(this,DialogActivity::class.java)

            startActivity(intent)

        }

    }//end oncreate