Activity跳转显示方法及隐式方法

public class AActivity extends AppCompatActivity {
    private Button btnJump;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_aactivity);
        btnJump=findViewById(R.id.jump);
        btnJump.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                //显式跳转方法1
                Intent intent=new Intent(AActivity.this,BActivity.class);
                startActivity(intent);

                //显式跳转方法二
                //Intent intent=new Intent();
                //intent.setClass(AActivity.this,BActivity.class);
                //startActivity(intent);

                //显示跳转方法三
                //Intent intent=new Intent();
                //intent.setClassName(AActivity.this, "com.example.first.jump.BActivity");
                //startActivity(intent);

                //显式跳转方法四
                //Intent intent=new Intent();
                //intent.setComponent(new ComponentName(AActivity.this, "com.example.first.jump.BActivity"));
                //startActivity(intent);

                //隐式跳转
                //Intent intent=new Intent();
                //intent.setAction("com.example.test.BActivity");
                //startActivity(intent);
                //隐式跳转需要在AndroidMainifest.xml文件中要跳转的activity下设置<intent-filter>标签，像这样
                /*<intent-filter>
                    <action android:name="com.example.test.BActivity" />

                    <category android:name="android.intent.category.DEFAULT" />
                </intent-filter>/>*/
            }
        });
    }
}