Android Studio片段不兼容类型错误 [英] Android Studio Fragment Incompatible types Error

问题描述

  import android.support.v4.app.Fragment;导入android.support.v4.app.FragmentManager;导入android.support.v4.app.FragmentTransaction;导入android.support.v7.app.AppCompatActivity;导入android.os.Bundle;公共类MainActivity扩展了AppCompatActivity {受保护的void onCreate(Bundle savedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);MyFragment frag = new MyFragment();FragmentManager manager = getFragmentManager();FragmentTransaction transaction = manager.beginTransaction();transaction.add(R.id.home，frag，文本消息");transaction.commit();} 

当我尝试运行此应用程序时，它显示错误，我不知道发生了什么.

gradle文件具有以下版本

  minSdkVersion 14targetSdkVersion 24版本代码1versionName"1.0" 

任何人都可以帮忙吗?请参考屏幕截图.Thx

解决方案

对于v4类型，请使用 getSupportFragmentManager()而不是您曾经使用过的 getFragmentManager()

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

public class MainActivity extends AppCompatActivity {


protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    MyFragment frag=new MyFragment();
    FragmentManager manager=getFragmentManager();
    FragmentTransaction transaction=manager.beginTransaction();
    transaction.add(R.id.home,frag,"text msg");
    transaction.commit();
}

When i try to run this apps, it shows an error and i have no idea what's going on.

gradle file has the following version

    minSdkVersion 14
    targetSdkVersion 24
    versionCode 1
    versionName "1.0"

Anyone can help ? Please refer to the screenshot .Thx

解决方案

for v4 type use getSupportFragmentManager() instead of the one you have used getFragmentManager()

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