E/FragmentManager: No view found for id 0x7f070032 (com.example.ruanjian1:id/content) for fragment wa{3554bc1 #1 id=0x7f070032}
Activity state:
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.ruanjian1, PID: 2343
java.lang.IllegalArgumentException: No view found for id 0x7f070032 (com.example.ruanjian1:id/content) for fragment wa{3554bc1 #1 id=0x7f070032}
at androidx.fragment.app.FragmentManagerImpl.moveToState(FragmentManager.java:1454)
at androidx.fragment.app.FragmentManagerImpl.moveFragmentToExpectedState(FragmentManager.java:1784)
at androidx.fragment.app.BackStackRecord.executeOps(BackStackRecord.java:797)
at androidx.fragment.app.FragmentManagerImpl.executeOps(FragmentManager.java:2625)
at androidx.fragment.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2411)
at androidx.fragment.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManager.java:2366)
at androidx.fragment.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2273)
at androidx.fragment.app.FragmentManagerImpl.dispatchStateChange(FragmentManager.java:3273)
at androidx.fragment.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:3229)
at androidx.fragment.app.FragmentController.dispatchActivityCreated(FragmentController.java:201)
at androidx.fragment.app.FragmentActivity.onStart(FragmentActivity.java:620)
at androidx.appcompat.app.AppCompatActivity.onStart(AppCompatActivity.java:178)
at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1435)
at android.app.Activity.performStart(Activity.java:8024)
at android.app.ActivityThread.handleStartActivity(ActivityThread.java:3475)
at android.app.servertransaction.TransactionExecutor.performLifecycleSequence(TransactionExecutor.java:221)
at android.app.servertransaction.TransactionExecutor.cycleToPath(TransactionExecutor.java:201)
at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:173)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:97)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2066)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:223)
at android.app.ActivityThread.main(ActivityThread.java:7656)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
Process 2343 terminated.
package com.example.ruanjian1;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentTransaction;
import android.os.Bundle;
import android.os.PersistableBundle;
import android.view.View;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
public class Main3Activity extends AppCompatActivity {
FragmentManager fragmentManager;
FragmentTransaction fragmentTransaction;
Fragment[] fragments;
/*private Fragment shou=new shou ();
private Fragment wa=new wa();
private Fragment wai=new wai();
private Fragment zhu=new zhu();
private FragmentManager fm;
*/
int currentTablndex = 0;
ImageView[] tu;
TextView[] zi;
void setTabSelection(int index) {
if (currentTablndex!= index) {
fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.hide(fragments[currentTablndex]);
fragmentTransaction.show(fragments[index]);
fragmentTransaction.commit();
tu[currentTablndex].setSelected(false);
tu[index].setSelected(true);
zi[currentTablndex].setTextColor(0xff737373);
zi[index].setTextColor(0xff33B5e5);
currentTablndex = index;
}
}
public void kongclick(View view) {
switch (view.getId()) {
case R.id.kong1:
setTabSelection(0);
break;
case R.id.kong2:
setTabSelection(1);
break;
case R.id.kong3:
setTabSelection(2);
break;
case R.id.kong4:
setTabSelection(3);
break;
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main3);
{
tu = new ImageView[4];
zi = new TextView[4];
tu[0] = (ImageView) findViewById(R.id.tu1);
tu[1] = (ImageView) findViewById(R.id.tu2);
tu[2] = (ImageView) findViewById(R.id.tu3);
tu[3] = (ImageView) findViewById(R.id.tu4);
zi[0] = (TextView) findViewById(R.id.zi1);
zi[1] = (TextView) findViewById(R.id.zi2);
zi[2] = (TextView) findViewById(R.id.zi3);
zi[3] = (TextView) findViewById(R.id.zi4);
tu[currentTablndex].setSelected(true);
zi[currentTablndex].setTextColor(0xff33b5e5);
fragments = new Fragment[]{
new shou(), new wa(), new wai(), new zhu()
};
fragmentManager = getSupportFragmentManager();
fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.add(R.id.content, fragments[0]);
fragmentTransaction.add(R.id.content, fragments[1]);
fragmentTransaction.add(R.id.content, fragments[2]);
fragmentTransaction.add(R.id.content, fragments[3]);
fragmentTransaction.hide(fragments[1]);
fragmentTransaction.hide(fragments[2]);
fragmentTransaction.hide(fragments[3]);
fragmentTransaction.commit();
}
}
MainActivity.javada代码
看一下你的线程是否有问题
既然代码没有问题，那么可能是运行时环境导致，把闪退log贴出来看看
闪退的日志呢，你贴出来呀。代码的检查分编译和和运行。编译通过不代表运行没有错误。
应该是 id 找不到把 你要看看布局文件 有没有 R.id.content